Rubber Disc Return Roller
Steel Belt Conveyor Self-Cleaning Return Roller with Rubber Disc . Conveyor rollers(idlers) are important parts on Belt Conveyor, it endure over 70% resistance of one belt conveyor. The conveyor roller(idler) used for supporting conveyor belt and the material.
MONSTER ROLLER conveyor represent the highest quality rubber disc return roller to assist our customers in helping make their plant/mine/facility to become more efficient, saft and productive.
Sleeve Return Cleaning Roller with Rubber Discs
Conveyor rollers(idlers) are important parts on Belt Conveyor, it endure over 70% resistance of one belt conveyor. The conveyor roller(idler) used for supporting conveyor belt and the material. There are kinds roller we supplied, like steel, nylon, ceramic or rubber. With years designing and manufacturing experience Double Arrow becomes a high quality roller(idler) server in conveyor spares industry.
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 |
Specification: Rubber Disc Return Roller
Rubber Disc Return Roller Processing Step:
* Tube ―→ Auto Cutting―→ Auto Lathing Hole―――――――――
|
* Bearing Housing ―→ Auto Lathing Edge ―→ CO2 Arc Welded | ―――→ Pressing Bearing & Seals
** | ↓
* Shaft―→ Auto Sawing―→ Auto Machanical Finishing―――――― Pressing Rubber Rings
↓
Rubber Disc Return Roller
↓
Technical Testing
Advantage:
Value price;
Triple labyrinth seal;
Custom powder coated.
Sealed for life ball bearing;
Interchangeable roller assemblies;
Maintenance free sealed ball bearing;
Lifetime more than 20,000-25,000 hours;
Extremely low rolling resistance & lowest operator cost;
JIS, CEMA, SABS, AS standard rubber disc return roller available;
Immersion Test
