Coal Belt Conveyor Mining Rubber Roller

Model NO.: SH-I
Working Life: 1 Year Under Normal Working Condition
Seal Type: Non-Contact Labyrinth Seal Structure
Testing: Water-Proof and Dust-Proof
Shaft: 45# Cold Drawing Round Steel
Belt Width: B500~B2400
Welding: Mixed Gas Shielded Arc Welding End
Executive Standard: GB, ISO, Cema, DIN, JIS, etc
Length: 150-3500mm
Color: as Requirment
Trademark: SH
Transport Package: Plywood Case
Specification: 60-219
Origin: China
HS Code: 84313900
Model NO.: SH-I
Working Life: 1 Year Under Normal Working Condition
Seal Type: Non-Contact Labyrinth Seal Structure
Testing: Water-Proof and Dust-Proof
Shaft: 45# Cold Drawing Round Steel
Belt Width: B500~B2400
Welding: Mixed Gas Shielded Arc Welding End
Executive Standard: GB, ISO, Cema, DIN, JIS, etc
Length: 150-3500mm
Color: as Requirment
Trademark: SH
Transport Package: Plywood Case
Specification: 60-219
Origin: China
HS Code: 84313900

Structure of the roller
Roller is assembled with shaft, shell, housing, in seal, bearing, labyrinth seal, cover, protective cover and circlip  

Coal Belt Conveyor Mining Rubber Roller
Technical requirments on the material
1)Steel tube:
*Carbon steel
*Surface of steel tube should be smooth
*without any fault such as crack, folding, layering or lap welding  
*Ovality shoud be less than 1/2 of tolerance of outer diameter
*curvature should be less than 1.0mm/m

Outer D
mm		 Thickness S
mm		 Theoretical WT
kg/m		 Allowable deviation mm
Outer diameter Wall thickness Wall thickness difference
Normal High level Normal High level
63.5 3.2 4.76 ±0.50 ±0.30 ±0.32 ±0.24 ≤7.5%
4.5 6.55 ±0.45 ±0.34
76.0 3.2 5.74 ±0.50 ±0.30 ±0.32 ±0.24
4.5 7.93 ±0.45 ±0.34
89.0 3.2 6.77 ±0.60 ±0.40 ±0.32 ±0.24
4.5 9.38 ±0.45 ±0.34
108.0 3.2 8.27 ±0.70 ±0.40 ±0.32 ±0.24
4.5 11.49 ±0.45 ±0.34
133.0 4.5 14.26 ±0.80 ±0.60 ±0.45 ±0.34
5.0 15.78 ±0.50 ±0.38
159.0 4.5 17.14 ±0.90 ±0.60 ±0.45 ±0.34
5.0 18.99 ±0.50 ±0.38
6.0 22.64 ±0.60 ±0.45
194.0 5.0 23.30 ±1.0 ±0.80 ±0.50 ±0.38
6.0 27.32 ±0.60 ±0.45
219.0 5.0 26.39 ±1.1 ±0.80 ±0.50 ±0.38
6.0 31.52 ±0.60 ±0.45

2)Bearing
*Rollers adopt C3 deep groove radial ball bearing which adopts bidirectional seal structure
  to improve the performance of water-proof and dust-proofing.
*Brand: SKF/NSK/NTN/HRB/KOYO/IKO/THK/TIMKEN, etc.
       (Make sure the quality of bearing)

3)Seal
Non-contact seal:
It is seal and its relative motion parts don't contact, and there is proper clearance seal.
Advantage
*Almost do not produce friction heat in the work
*No wear and tear, especially suitable for high speed and high temperature occasion.
*Forming a complex, winding and narrow maze between inner and outer seal part.
*The good performance of water-proof and dust-proof.

4)Lubricating oil
Rolling bearing lubrication purpose is to reduce the bearing internal friction and wear, prevent burning stick.The lubrication effect is as follows.
*Reduce the friction and wear
*To extend the fatigue life  
*Discharge the friction heat and cooling
*To prevent foreign matter into the bearing internal, or to prevent rust and corrosion
ETC.


Technical Requirments on the production
Cutting size of the tube, tube length will be carried out on tolerance level IT. 
 
Size(mm) 250-
315		 315-
400		 400-
500		 500-
630		 630-
800		 800-
1000		 1000-
1250		 1250-
1600
Tolerance
(mm)		 0.32 0.36 0.4 0.44 0.5 0.56 0.66 0.78

Cut of the tube, bevel roughness will be checked according to max value (12.5_6.3μm) of Ra. The bevel size on two ends should be same without any bur. Cut surface on two ends of the tube should be parallel, will be checked on tolerance level IT10.  Please see tolerance size in the sheet below. (take diameter as standard.)
Size(mm) 63-100   100-160 160-250
Tolerance(mm) 0.15 0.20 0.25


Diameter tolerance of installing stop of the bearing housing should conform tolerance level H9, for size requirements please see the sheet below.
Size(mm) 50-80 80-120 120-180 180-250
Tolerance(mm) 0-0.074 0-0.087 0-0.10 0-0.115

Depth tolerance on one end of installing stop of bearing housing should be processed and checked on standard 0-0.2mm. Space distance tolerance of bearing housing stop should be in the range of 0-0.2mm. Roughness on processing part of the tube should be checked on 6.3-3.2μm(max value of Ra) without any bur.

Roller Specification:
NO. Standard Diameter Length Scope
(mm)		 Bearings Type
Min~Max		 Idler's Shell Wall Thickness
  mm Inch      
1 63.5 2 1/2 150-3500 203 204 3.0mm~4.0 mm  
2 76 3   204 3.0mm~4.5 mm  
3 89 3 1/3   204 205 3.0mm~4.5 mm  
4 102 4   204 205 206 305 3.2mm~4.5 mm  
5 108 4 1/4   204 205 206 305 306 3.5mm~4.5 mm  
6 114 4 1/2   204 205 206 305 306 3.5mm~4.5 mm  
7 127 5   204 205 206 305 306 3.5mm~5.0 mm  
8 133 5 1/4   204 205 206 207 305 306 3.5mm~5.0 mm  
9 140 5 1/2   205 206 207 305 306 307 3.5mm~5.0 mm  
10 152 6   205 206 207 305 306 307 308 4.0mm~5.0 mm  
11 159 6 1/4   205 206 207 305 306 307 308 4.0mm~5.0 mm  
12 165 6 1/2   206 207 305 306 307 308 4.5mm~6.0 mm  
13 177.8 7   207 306 307 308 309 4.5mm~6.0 mm  
14 190.7 7 1/2   207 306 307 308 309 310 4.5mm~7.0 mm  
15 194 7 5/8   207 306 307 308 309 310 4.5mm~8.0 mm  
16 219 8 5/8   308 309 310 312 4.5mm~8.0 mm  

Structure of the roller
Roller is assembled with shaft, shell, housing, in seal, bearing, labyrinth seal, cover, protective cover and circlip  

Coal Belt Conveyor Mining Rubber Roller
Technical requirments on the material
1)Steel tube:
*Carbon steel
*Surface of steel tube should be smooth
*without any fault such as crack, folding, layering or lap welding  
*Ovality shoud be less than 1/2 of tolerance of outer diameter
*curvature should be less than 1.0mm/m

Outer D
mm		 Thickness S
mm		 Theoretical WT
kg/m		 Allowable deviation mm
Outer diameter Wall thickness Wall thickness difference
Normal High level Normal High level
63.5 3.2 4.76 ±0.50 ±0.30 ±0.32 ±0.24 ≤7.5%
4.5 6.55 ±0.45 ±0.34
76.0 3.2 5.74 ±0.50 ±0.30 ±0.32 ±0.24
4.5 7.93 ±0.45 ±0.34
89.0 3.2 6.77 ±0.60 ±0.40 ±0.32 ±0.24
4.5 9.38 ±0.45 ±0.34
108.0 3.2 8.27 ±0.70 ±0.40 ±0.32 ±0.24
4.5 11.49 ±0.45 ±0.34
133.0 4.5 14.26 ±0.80 ±0.60 ±0.45 ±0.34
5.0 15.78 ±0.50 ±0.38
159.0 4.5 17.14 ±0.90 ±0.60 ±0.45 ±0.34
5.0 18.99 ±0.50 ±0.38
6.0 22.64 ±0.60 ±0.45
194.0 5.0 23.30 ±1.0 ±0.80 ±0.50 ±0.38
6.0 27.32 ±0.60 ±0.45
219.0 5.0 26.39 ±1.1 ±0.80 ±0.50 ±0.38
6.0 31.52 ±0.60 ±0.45

2)Bearing
*Rollers adopt C3 deep groove radial ball bearing which adopts bidirectional seal structure
  to improve the performance of water-proof and dust-proofing.
*Brand: SKF/NSK/NTN/HRB/KOYO/IKO/THK/TIMKEN, etc.
       (Make sure the quality of bearing)

3)Seal
Non-contact seal:
It is seal and its relative motion parts don't contact, and there is proper clearance seal.
Advantage
*Almost do not produce friction heat in the work
*No wear and tear, especially suitable for high speed and high temperature occasion.
*Forming a complex, winding and narrow maze between inner and outer seal part.
*The good performance of water-proof and dust-proof.

4)Lubricating oil
Rolling bearing lubrication purpose is to reduce the bearing internal friction and wear, prevent burning stick.The lubrication effect is as follows.
*Reduce the friction and wear
*To extend the fatigue life  
*Discharge the friction heat and cooling
*To prevent foreign matter into the bearing internal, or to prevent rust and corrosion
ETC.


Technical Requirments on the production
Cutting size of the tube, tube length will be carried out on tolerance level IT. 
 
Size(mm) 250-
315		 315-
400		 400-
500		 500-
630		 630-
800		 800-
1000		 1000-
1250		 1250-
1600
Tolerance
(mm)		 0.32 0.36 0.4 0.44 0.5 0.56 0.66 0.78

Cut of the tube, bevel roughness will be checked according to max value (12.5_6.3μm) of Ra. The bevel size on two ends should be same without any bur. Cut surface on two ends of the tube should be parallel, will be checked on tolerance level IT10.  Please see tolerance size in the sheet below. (take diameter as standard.)
Size(mm) 63-100   100-160 160-250
Tolerance(mm) 0.15 0.20 0.25


Diameter tolerance of installing stop of the bearing housing should conform tolerance level H9, for size requirements please see the sheet below.
Size(mm) 50-80 80-120 120-180 180-250
Tolerance(mm) 0-0.074 0-0.087 0-0.10 0-0.115

Depth tolerance on one end of installing stop of bearing housing should be processed and checked on standard 0-0.2mm. Space distance tolerance of bearing housing stop should be in the range of 0-0.2mm. Roughness on processing part of the tube should be checked on 6.3-3.2μm(max value of Ra) without any bur.

Roller Specification:
NO. Standard Diameter Length Scope
(mm)		 Bearings Type
Min~Max		 Idler's Shell Wall Thickness
  mm Inch      
1 63.5 2 1/2 150-3500 203 204 3.0mm~4.0 mm  
2 76 3   204 3.0mm~4.5 mm  
3 89 3 1/3   204 205 3.0mm~4.5 mm  
4 102 4   204 205 206 305 3.2mm~4.5 mm  
5 108 4 1/4   204 205 206 305 306 3.5mm~4.5 mm  
6 114 4 1/2   204 205 206 305 306 3.5mm~4.5 mm  
7 127 5   204 205 206 305 306 3.5mm~5.0 mm  
8 133 5 1/4   204 205 206 207 305 306 3.5mm~5.0 mm  
9 140 5 1/2   205 206 207 305 306 307 3.5mm~5.0 mm  
10 152 6   205 206 207 305 306 307 308 4.0mm~5.0 mm  
11 159 6 1/4   205 206 207 305 306 307 308 4.0mm~5.0 mm  
12 165 6 1/2   206 207 305 306 307 308 4.5mm~6.0 mm  
13 177.8 7   207 306 307 308 309 4.5mm~6.0 mm  
14 190.7 7 1/2   207 306 307 308 309 310 4.5mm~7.0 mm  
15 194 7 5/8   207 306 307 308 309 310 4.5mm~8.0 mm  
16 219 8 5/8   308 309 310 312 4.5mm~8.0 mm  

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