THICK WEB SWITCH EXPANSION JOINT (TWSEJ) (UPTO 100mm PERMISSIBLE MOVEMENT AT EACH END) FOR LWR B.G. (1673mm) FOR 60 KG. (UIC) RAIL ON PSC SLEEPERS TO DRAWING NO. RDSO/T-8822

THICK
WEB SWITCH EXPANSION JOINT (TWSEJ) (UPTO 100mm PERMISSIBLE MOVEMENT AT EACH
END) FOR LWR B.G. (1673mm) FOR 60 KG. (UIC) RAIL ON PSC SLEEPERS TO DRAWING NO.
RDSO/T-8822

Dimensional report

1.     Description: Tongue Rail to Drawing no. RDSO/T-8822/1

SL

No

 

CHECKING PARAMETERS

 

DRG. DIM.

(mm)

 

Mode of Measurement

Observation (mm)

 

Remarks

Set no. –

SL No.- 

LH

RH

1

Tongue
Rail ID No.

 

 

XYZ

XYZ

Satisfactory

2

Length
of Tongue rail

5850±3

By
Steel Tape

5851

5852

Satisfactory

3

Stock
side foot planning

4810 ±1

By
Steel Tape

4810

4810

Satisfactory

4

Stock
side head planning

4810 ±1

By
Steel Tape

4811

4810

Satisfactory

5

Gauge
side head planning

4516 ±1

By
Steel Tape

4516

4516

Satisfactory

 

 

 

6

Versine of the curved Tongue Rail : Concave/Convex

 

By
Chord

Convex

Concave

Convex

Concave

Satisfactory

V1 from toe at 564.5 mm

4.8±1

Nylon thread & Scale

4.8

4.8

4.8

4.8

Satisfactory

V2 from toe at 1129 mm

6.4±1

Nylon thread & Scale

6.5

6.4

6.5

6.4

Satisfactory

V3 from toe at 1193.5mm

4.8±1

Nylon thread & Scale

4.9

4.8

4.8

4.9

Satisfactory

7

Toe
Profile

Template – Z

Gauge  No 1

 OK

OK

Satisfactory

8

Head Thickness of Tongue Rail at 2098
mm from toe

22

Gauge  No 2

OK

OK

Satisfactory

9

Head Thickness of Tongue at 2784 mm from toe

36

Gauge  No 3

OK

OK

Satisfactory

10

Head Thickness of Tongue at 4516 mm from toe

51

Gauge  No 4

OK

OK

Satisfactory

11

Stock
side foot milling (Relief Planning)

300×27, 1 in 14

Gauge  No 14

OK

OK

Satisfactory

12

Inside head machining of Tongue Rail

1 in 4

Gauge  No 9

OK

OK

Satisfactory

13

Head & foot radius & length

300R & 110mm

Gauge  No 13

OK

OK

Satisfactory

14

Foot
width of Tongue rail

119±1

Gauge  No 10

OK

OK

Satisfactory

15

13R
radius at gauge face

13R

Gauge  No 5

OK

OK

Satisfactory

16

Stock
side foot milling profile

1 in 14 & 20mm

Gauge  No 15

OK

OK

Satisfactory

17

Bend

51

Gauge  No 27

OK

OK

Satisfactory

18

Dia of 
holes for safety clamp

28±0.8

Gauge  No 7

OK

OK

Satisfactory

19

Spacing for Tongue Rail holes for safety clamp
from toe

470 & 530mm

Gauge  No 17

OK

OK

Satisfactory

20

Spacing for Tongue Rail holes for safety clamp
from hole to hole & edge

35mm & 60mm

Gauge  No 19

OK

OK

Satisfactory

21

Chamfering of 28 dia. Holes

Correct

Chamfering Tool

OK

OK

Satisfactory

22

End  Squareness

Tri
Square

OK

OK

Satisfactory

23

Alignment
of Tongue rail on Gauge face

±1

By
Chord

OK

OK

Satisfactory

24

Surface finish on machined surface of Tongue Rail

3.2 Micron (Max.)

By roughness tester

OK

OK

Satisfactory

25

Removal of Sharp edges

2R

Visual

OK

OK

Satisfactory


2.     Description: Stock Rail to Drawing no. RDSO/T-8822/2

SL

No

 

CHECKING PARAMETERS

 

DRG. DIM.

(mm)

 

Mode of Measurement

Observation

(mm)

Remarks

Set no. –

SL No. –

LH

RH

1

Length
of Stock rail

6450±3

By Steel Tape

6451

6452

Satisfactory

2

Stock
rail head machining length

4900 ±1

By Steel Tape

4900

4902

Satisfactory

3

Stock
Rail head machining

1 in 4

Gauge  No 11

OK

OK

Satisfactory

4

Top
slope of stock rail

15/300

Gauge  No 12

OK

OK

Satisfactory

5

Side
slope of stock rail

20/50

Gauge  No 16

OK

OK

Satisfactory

6

Bend

51

Gauge  No 27

OK

OK

Satisfactory

 

 

 

 

7

Versine of the curved stock Rail: Convex/ Concave

 

By Chord

Convex

Concave

Convex

Concave

Satisfactory

V1 from toe at 564.5 mm

4.8±1

Nylon thread & Scale

4.8

4.8

4.7

4.8

Satisfactory

V2 from toe at 1129 mm

6.4±1

Nylon thread & Scale

6.5

6.5

6.5

6.5

Satisfactory

V3 from toe at 1193.5mm

4.8±1

Nylon thread & Scale

4.9

4.9

4.9

4.9

Satisfactory

8

End  Squareness

Tri Square

OK

OK

Satisfactory

9

Alignment
of straight portion

±1

By Chord

OK

OK

Satisfactory

10

Removal
of Sharp edges

2R

Visual

OK

OK

Satisfactory

 

3.     Description: Components of TWSEJ to drawing no. RDSO/T-8822

SL

No

CHECKING PARAMETERS

DRG. DIM.

(mm)

Mode of Measurement

Observation

 

Remarks

Set no.- 

SL No. 

LH

RH

1

Bearing
Plates

(RDSO/T-8823
to  RDSO/T-8836)

As per drg.

By
Gauge

OK

OK

Satisfactory

2

Leaf
Spring ( RDSO/T-8837)

As per drg.

Vernier
Calipers

OK

OK

Satisfactory

3

Safety
Plate (RDSO/T-8839)

As per drg.

Gauge  No 18

OK

OK

Satisfactory

4

M.S.
Clip (RDSO/T-8840)

As per drg.

Gauge  No 20

OK

OK

Satisfactory

5

Black
bolt (RDSO/T-8841 & RDSO/T-8842)

As per drg.

Vernier
Calipers

OK

OK

Satisfactory

6

Taper
Washer (RDSO/T-8843)

As per drg.

Vernier
Calipers

OK

OK

Satisfactory

7

Angle
Tie (RDSO/T-8844)

As per drg.

Vernier Calipers,
Tape & Gauge No. 47

OK

OK

Satisfactory

8

Wedge(RDSO/T-6305)

As per drg.

Vernier
Calipers

OK

OK

Satisfactory

9

Single
Coil Spring Washer (T-10773)

As per drg.

Vernier
Calipers

OK

OK

Satisfactory

10

Plate
Screw (RDSO/T-3915 to  RDSO/T-3916)

As per drg.

Vernier
Calipers

OK

OK

Satisfactory


4.     Description: Layout of TWSEJ to Drawing no. RDSO/T-8822

SL

No

CHECKING PARAMETERS

DRG. DIM.

(mm)

Mode of Measurement

Observation

(mm)

Remarks

Set no.- 

SL No.- 

LH

RH

1

Overall
length of SEJ

7700±3

By Steel Tape

7701

7702

Satisfactory

2

Matching
Length

4600±1

By Steel Tape

4600

4601

Satisfactory

3

Mean
Position Tongue Rail Tip

1850±2

By Steel Tape

1850

1851

Satisfactory

4

Mean
Position Stock Rail Tip

1250±2

By Steel Tape

1851

1251

Satisfactory

5

Matching of Tongue & Stock rails

 ±0.5

Feeler Gauge

OK

OK

Satisfactory

6

Track
Gauge at Sleeper No.1

 

 

 

 

 

1673

 

 

 

 

 

Track Gauge

1673

Satisfactory

7

Track
Gauge at Sleeper No.2

1673

Satisfactory

8

Track
Gauge at Sleeper No.3

1673

Satisfactory

9

Track
Gauge at Sleeper No.4

1672

Satisfactory

10

Track
Gauge at Sleeper No.5

1673

Satisfactory

11

Track
Gauge at Sleeper No.6

1673

Satisfactory

12

Track
Gauge at Sleeper No.7

1674

Satisfactory

13

Track
Gauge at Sleeper No.8

1673

Satisfactory

14

Track
Gauge at Sleeper No.9

1674

Satisfactory

15

Track
Gauge at Sleeper No.10

1673

Satisfactory

16

Track
Gauge at Sleeper No.11

1673

Satisfactory

17

Alignment

By Chord

OK

OK

Satisfactory

18

Fittings
Condition

Visual

OK

OK

Satisfactory

5.    
Description
of item: Bearing Plate for Sl. No. 1 & 11
to Drawing no.-RDSO/T-8823

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 28

OK

OK

OK

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 28

OK

OK

OK

OK

Satisfactory

3

Thickness
of  Bearing Plate

22/14±0.5

Vernier Calipers

22.2/14

22.2/14

22.2/14.1

22.2/ 14.3

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 28

OK

OK

OK

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 28

OK

OK

OK

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

OK

OK

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

150.8±1

Gauge  No 28

OK

OK

OK

OK

Satisfactory

8

Gap
between shoulders

167+1.5/-0

Gauge  No 28

OK

OK

OK

OK

Satisfactory

9

Rail
seat & shoulders  Cant 1 in 20

1 in 20

Gauge  No 42

OK

OK

OK

OK

Satisfactory

10

Shoulder
Length x width

75×75±2

Vernier Calipers

75.3/ 75.5

75.3/ 75.5

75.3/75.5

75.3/ 75.5

Satisfactory

11

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

OK

OK

OK

Satisfactory

12

Welding
of shoulders

10

OK

OK

OK

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

6.    
Description
of item: Bearing Plate for Sl. No. 2,
to Drawing no. RDSO/T-8824

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 29

OK

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 29

OK

OK

Satisfactory

3

Thickness
of  Bearing Plate

22±0.5

Vernier Calipers

22.1

22.3

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 29

OK

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 29

OK

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

173.1±1

Gauge  No 28

OK

OK

Satisfactory

8

Gap
between shoulders

157+1.5/-0

Gauge  No 28

OK

OK

Satisfactory

9

Rail
seat & shoulders  Cant 1 in 20

1 in 20

Gauge  No 43

OK

OK

Satisfactory

10

Length
of Tongue Rail resting plate

340±2

Steel Scale

341.5

341.5

Satisfactory

11

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

120.2

119.8

Satisfactory

12

Thickness
of tongue Rail resting pad

49/32±0.5

Vernier Calipers

49.6/32.3

49/32.1

Satisfactory

13

Shoulder
Length x width

75×75±2

Vernier Calipers

75/75

75/75

Satisfactory

14

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

OK

Satisfactory

15

Welding
of shoulders

6/10

OK

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

7.    
Description
of item: Bearing Plate for Sl. No. 3,
to Drawing no. RDSO/T-8825                

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 30

OK

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 30

OK

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18.3/22

18/22.5

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 30

OK

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 30

OK

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

99.8±1

Gauge  No 30

OK

OK

Satisfactory

8

Gap
between shoulders

228+2/-0

Gauge  No 30

OK

OK

Satisfactory

9

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

OK

Satisfactory

11

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

200

Satisfactory

12

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

120.5

121

Satisfactory

13

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

10

Satisfactory

14

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

103.3

103

Satisfactory

15

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

OK

Satisfactory

16

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

OK

Satisfactory

17

Dia
of key hole

18±0.25

Gauge  No 8

OK

OK

Satisfactory

18

Shoulder
Length x width

75×75±2

Vernier Calipers

76/76

75/75.5

Satisfactory

19

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

OK

Satisfactory

20

Welding
of shoulders

6/10

OK

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

8.    
Description
of item: Bearing Plate for Sl. No. 4,
to Drawing no. RDSO/T-8826

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

 

1

Length
of  Bearing Plate

579±3

Gauge  No 31

OK

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 31

OK

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18/22

18/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 31

OK

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 31

OK

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

102.4±1

Gauge  No 31

OK

OK

Satisfactory

8

Gap
between shoulders

228+2/-0

Gauge  No 31

OK

OK

Satisfactory

9

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

OK

Satisfactory

11

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

201

Satisfactory

12

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

121

Satisfactory

13

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

10

Satisfactory

14

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

102

Satisfactory

15

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

OK

Satisfactory

16

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

OK

Satisfactory

17

Dia
of key hole

18±0.25

Gauge  No 8

OK

OK

Satisfactory

18

Shoulder
Length x width

75×75±2

Vernier Calipers

76/75

76/75

Satisfactory

19

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

OK

Satisfactory

20

Welding
of shoulders

6/10

OK

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

9.    
Description
of item: Bearing Plate for Sl. No. 5 (LH),
to Drawing no. RDSO/T-8827

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 32

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 32

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18.5/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 32

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 32

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

108.5±1

Gauge  No 32

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

152/149±1

Gauge  No 32

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 32

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory

18

Dia
of key hole

18±0.25

Gauge  No 8

OK

Satisfactory

19

Shoulder
Length x width

75×75±2

Vernier Calipers

75/76

Satisfactory

20

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

Satisfactory

21

Welding
of shoulders

6/10

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

10.  
Description
of item: Bearing Plate for Sl. No. 5 (RH),
to Drawing no.RDSO/T-8828

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 35

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 35

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18/22.5

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 35

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 35

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

108.5±1

Gauge  No 35

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

149/152±1

Gauge  No 35

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 35

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102.5

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory

18

Dia
of key hole

18±0.25

Gauge  No 8

OK

Satisfactory

19

Shoulder
Length x width

75×75±2

Vernier Calipers

75.5/76

Satisfactory

20

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

Satisfactory

21

Welding
of shoulders

6/10

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

11.  
Description
of item: Bearing Plate for Sl. No. 6 (LH),
to Drawing no. RDSO/T-8829

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 33

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 33

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 33

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 33

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

118.2±1

Gauge  No 33

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

162/158±1

Gauge  No 33

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 33

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory

18

Dia
of key hole

18±0.25

Gauge  No 8

OK

Satisfactory

19

Shoulder
Length x width

75×75±2

Vernier Calipers

75.2/75

Satisfactory

20

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

Satisfactory

21

Welding
of shoulders

6/10

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

12.  
Description
of item: Bearing Plate for Sl. No. 6 (RH),
to Drawing no. RDSO/T-8830   

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 36

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 36

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18.9/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 36

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 36

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

118.2±1

Gauge  No 36

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

158/162±1

Gauge  No 36

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 36

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory

18

Dia
of key hole

18±0.25

Gauge  No 8

OK

Satisfactory

19

Shoulder
Length x width

75×75±2

Vernier Calipers

75/75.3

Satisfactory

20

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

Satisfactory

21

Welding
of shoulders

6/10

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

13.  
Description
of item: Bearing Plate for Sl. No. 7 (LH),
to Drawing no. RDSO/T-8831

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 34

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 34

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18.5/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 34

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 32

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

130.8±1

Gauge  No 34

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

175/171±1

Gauge  No 34

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 34

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory

18

Dia
of key hole

18±0.25

Gauge  No 8

OK

Satisfactory

19

Shoulder
Length x width

75×75±2

Vernier Calipers

75/75

Satisfactory

20

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

Satisfactory

21

Welding
of shoulders

6/10

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

14.  
Description
of item: Bearing Plate for Sl. No. 7 (RH),
to Drawing no. RDSO/T-8832

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 37

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 37

OK

Satisfactory

3

Thickness
of  Bearing Plate

1822±0.5

Vernier Calipers

18/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 37

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 37

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

130.8±1

Gauge  No 37

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

171/175±1

Gauge  No 37

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 37

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory

18

Dia
of key hole

18±0.25

Gauge  No 8

OK

Satisfactory

19

Shoulder
Length x width

75×75±2

Vernier Calipers

75/75

Satisfactory

20

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

Satisfactory

21

Welding
of shoulders

6/10

OK

Satisfactory

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

15.  
Description
of item: Bearing Plate for Sl. No. 8 (LH),
to Drawing no. RDSO/T-8833

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 38

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 38

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.88

Vernier Calipers

18/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 38

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 38

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

141±1

Gauge  No 38

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

184/182±1

Gauge  No 38

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 38

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory

18

Dia
of key hole

18±0.25

Gauge  No 8

OK

Satisfactory

19

Shoulder
Length x width

75×75±2

Vernier Calipers

75/75

Satisfactory

20

Shoulder
hole dia.

23±0.5

Gauge  No 26

OK

 

21

Welding
of shoulders

6/10

OK

 

NOTE:
All critical dimensions are checked by RDSO approved gauges

 

16.  
Description
of item: Bearing Plate for Sl. No. 8 (RH),
to Drawing no. RDSO/T-8834

S

N.

Description

Drg. dimension (mm)

Gauge/

Instrument

Observed dimension

Remarks

1

Length
of  Bearing Plate

579±3

Gauge  No 39

OK

Satisfactory

2

Width
of  Bearing Plate

200±2

Gauge  No 39

OK

Satisfactory

3

Thickness
of  Bearing Plate

18/22±0.5

Vernier Calipers

18/22

Satisfactory

4

Hole
center distance of bearing plate along Length

495±1

Gauge  No 39

OK

Satisfactory

5

Hole
center distance of bearing plate along width

120±0.8

Gauge  No 39

OK

Satisfactory

6

Hole
dia. of bearing plate

27±0.8

Gauge  No 6

OK

Satisfactory

7

Position
of outer shoulder from centre of Bearing Plate holes

141±1

Gauge  No 39

OK

Satisfactory

8

Position
of outer shoulder from Ref. end

182/184±1

Gauge  No 39

OK

Satisfactory

9

Gap
between shoulders

228+2/-0

Gauge  No 39

OK

Satisfactory

10

Rail
seat & shoulders  Cant 1 in 20
(S/R)

1 in 20

Gauge  No 45

OK

Satisfactory

11

Rail
seat & shoulders  Cant 1 in 20
(T/R)

1 in 20

Gauge  No 44

OK

Satisfactory

12

Length
of Tongue Rail resting plate

200±2

Vernier Calipers

201

Satisfactory

13

Width
of Tongue Rail resting plate

120±2

Vernier Calipers

121

Satisfactory

14

Depth
of top machining of Tongue rail resting plate

10±0.5

Vernier Calipers

10

Satisfactory

15

Length
of top machining of Tongue rail resting plate

102.5±1

Vernier Calipers

102

Satisfactory

16

Key
hole centre distance from side of block

90±0.8

Gauge  No 25

OK

Satisfactory

17

Height
of key hole centre from bottom of plate

42.5±0.8

Gauge  No 24

OK

Satisfactory