Polyurethane Roller With Bearing
Brand :
MISUMI
Caution
Product Description
This is an economy item, The price is cheaper than the MISUMI standard product.
Product Overview
Urethane is sintered on the outer surface of the core material to form a coated bearing roller with high bonding strength, making it suitable for transporting and sliding various workpieces.
Dimensional Drawing
Processing conditions of round hole type and set screw type
■ ℓ Size
When L<d × 3, straight type (no relief groove processing)
When L ≥ d × 3, the effective length of both ends d × 1 (ℓ), and others require relief groove processing.
When L > d × 4, the effective length of both ends d × 2 (ℓ), and others require relief groove processing.
*Sometimes there may be no relief processing.
| d | Total length L dimension | ||||||
| 15 | 20 | 25 | 30 | 40 | 50 | 100 | |
| 8 | No relief processing | 8 | 8 | 16 | 16 | － | |
| 10 | No relief processing | 10 | 10 | 20 | － | ||
| 12 | No relief processing | 12 | 24 | 24 | |||
| 15 | No relief processing | 15 | 30 | ||||
| 20 | No relief processing | 40 | |||||
| 25 | No relief processing | 25 | |||||
| 30 | No relief processing | 30 | |||||
When L<d × 3, straight type (no relief groove processing)When L ≥ d × 3, the effective length of both ends d × 1 (ℓ), and others require relief groove processing.
When L > d × 4, the effective length of both ends d × 2 (ℓ), and others require relief groove processing.
*Sometimes there may be no relief processing.
Specification Overview
| Type |  Material |  Surface Treatment (Coating) | Bearing |  Hardness | ||
| Straight type | Crowned Type | |||||
| L dimension selectable | L dimension configurable | L dimension selectable | Core Material | |||
| E-RORB | - | E-ROCRB | General structural steel or carbon steel | Black Oxide | Steel | - |
| E-RORM | - | E-ROCRM | Electroless Nickel Plating | - | ||
| E-RORS | - | E-ROCRS | Austenitic Stainless Steel | - | - | |
| E-RORA | - | E-ROCRA | Aluminum | Clear Anodized | - | |
| E-RORKS | - | - | Austenitic Stainless Steel | Urethane (Natural) | Steel | Shore A95 |
| E-RORKA | - | - | Aluminum | |||
| E-RORUS | E-ROFRUS | - | Austenitic Stainless Steel | Shore A90 | ||
| E-RORUA | E-ROFRUA | - | Aluminum | Steel | ||
| E-RORGS | - | - | Austenitic Stainless Steel | Shore A70 | ||
| E-RORGA | E-ROFRGA | - | Aluminum | |||
| E-RORHS | - | - | Austenitic Stainless Steel | Shore A50 | ||
| E-RORHA | E-ROFRHA | - | Aluminum | |||
| E-RORTS | E-ROFRTS | - | Austenitic Stainless Steel | Heat-resistant polyurethane (Red Brown) Operating temperature: up to 110°C | Steel | Shore A90 |
| E-RORTA | - | - | Aluminum | |||
Material color is subject to the actual product. Polyurethane will yellow over time, but its properties will not change.Urethane is sintered on the outer perimeter of the core material.This product does not guarantee the bearing brand.■ Polyurethane Shock Absorbing Material Color Chart
| Natural |
 |
Polyurethane is subject to color variation; the above colors are for reference only.Specification Table
| Part Number | D |  L | d | D1(H7) | dh | B | Bearing Used | ||||||||||||||
 Type |  No. | Size Selection | Dimension configurable | ||||||||||||||||||
| L Size Selection Straight Column Type E-RORB E-RORM E-RORS E-RORA E-RORKS E-RORKA E-RORUS E-RORUA E-RORGS E-RORGA E-RORHS E-RORHA E-RORTS E-RORTA | L Size Selection Crowned Type E-ROCRB E-ROCRM E-ROCRS E-ROCRA | L Size Specification Straight Column Type E-ROFRUS E-ROFRUA E-ROFRGA E-ROFRHA E-ROFRTS | (20) | 20 | 15 | 20 | 25 | 30 | 40 | 50 | - | 6 | 15 | 10 | 5 | 696ZZ × 2 | |||||
| 25 | 25 | 20 | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 21-49 | 6 | 15 | 10 | 5 | 696ZZ × 2 | ||||
| 30 | 30 | 20 | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 8 | 19 | 15 | 6 | 698ZZ × 2 | |||||
| 35A | 35 | 25 | 30 | 40 | 50 | 26 to 49 | 8 | 22 | 15 | 7 | 608ZZ × 2 | ||||||||||
| 35 | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 10 | 22 | 18 | 6 | 6900ZZ × 2 | |||||||
| 40A | 40 | 25 | 30 | 40 | 50 | 10 | 26 | 18 | 8 | 6000ZZ × 2 | |||||||||||
| 40 | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 12 | 28 | 24 | 8 | 6001ZZ × 2 | |||||||
| 50A | 50 | 25 | 30 | 40 | 50 | 26 to 99 | 12 | 32 | 24 | 10 | 6201ZZ × 2 | ||||||||||
| 50 | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 15 | 32 | 28 | 9 | 6002ZZ × 2 | |||||||
Applicable only to core material type D20 (E-RORB, E-RORM, E-RORS, E-RORA, E-ROCRB, E-ROCRM, E-ROCRS, E-ROCRA).Some sizes may not be available in all specifications. Please note.For models E-ROCRB/E-ROCRM/E-ROCRS/E-ROCRA with D40 or 40 A, the maximum L is 50.Polyurethane may discolor over time, but this does not affect its properties.Product Features
Feature 1: Urethane layer is directly sintered on the outer perimeter of the core material and is not easy to fall off.
Feature 2: Based on its excellent mechanical strength, urethane is widely used to prevent the scars and cracks that occur when brittle objects such as glass and acrylic are transported.
Feature 3: Urethane is less likely to transmit vibration and sound.
Feature 4: Polyurethane has low dust generation, and since it does not contain carbon, it is a material that is not prone to color transfer. (*Natural color only)
Feature 5: Rubber prevents workpiece scratches and cracking during fastening; provides excellent cushioning and vibration damping for impact parts, and is effective in vibration prevention.
■Characteristics Table
Feature 2: Based on its excellent mechanical strength, urethane is widely used to prevent the scars and cracks that occur when brittle objects such as glass and acrylic are transported.
Feature 3: Urethane is less likely to transmit vibration and sound.
Feature 4: Polyurethane has low dust generation, and since it does not contain carbon, it is a material that is not prone to color transfer. (*Natural color only)
Feature 5: Rubber prevents workpiece scratches and cracking during fastening; provides excellent cushioning and vibration damping for impact parts, and is effective in vibration prevention.
■Characteristics Table
Precautions
(1) Polyurethane bonded to the bearing may come off under harsh operating conditions. If you require higher adhesion of polyurethane, please select 
Sintered Polyurethane Rollers
(2) The actual color of the material shall prevail. Polyurethane may yellow over time, but its properties will not change.
(3) About urethane discoloring
Urethane will darken its color by absorbing UV rays or illuminating light. This phenomenon is called yellowing. But it does not affect its physical properties, please fully understand when using it.
(4) Hydrolysis characteristics of urethane
If urethane is used for a long time in a moist or humid environment, it will be hydrolyzed and deteriorated.
It is recommended to manage the temperature and humidity of the warehouse and operating environment in areas with high humidity to extend the service life of the product.
Sintered Polyurethane Rollers(2) The actual color of the material shall prevail. Polyurethane may yellow over time, but its properties will not change.
(3) About urethane discoloring
Urethane will darken its color by absorbing UV rays or illuminating light. This phenomenon is called yellowing. But it does not affect its physical properties, please fully understand when using it.
| New urethane | Yellowed urethane |
 |  |
(4) Hydrolysis characteristics of urethane
If urethane is used for a long time in a moist or humid environment, it will be hydrolyzed and deteriorated.
It is recommended to manage the temperature and humidity of the warehouse and operating environment in areas with high humidity to extend the service life of the product.
(5) Changes in the state of the product after hydrolysis
· The surface of the polyurethane becomes sticky
· Pressing lightly with a fingernail leaves irreversible marks
· The hardness of the polyurethane decreases
· The polyurethane dries out and easily disintegrates into powder
· The surface of the polyurethane becomes sticky
· Pressing lightly with a fingernail leaves irreversible marks
· The hardness of the polyurethane decreases
· The polyurethane dries out and easily disintegrates into powder
| Hydrolyzed urethane |
 |
(6) Urethane dimension change
Urethane dimension will change with the surrounding temperature, but the amount of change is not large, and it can be restored to its original dimension after a few hours at room temperature.
Urethane dimension will change with the surrounding temperature, but the amount of change is not large, and it can be restored to its original dimension after a few hours at room temperature.
Example of Use
Mechanism name: pallet vertical transfer mechanism
Mechanism function:
Lift the workpiece on the conveyor and change the conveying direction.
Role of urethane roller:
To receive the workpiece conveyed by the motor roller. Coated urethane layer protects the workpiece from damage.
Mechanism function:
Lift the workpiece on the conveyor and change the conveying direction.
Role of urethane roller:
To receive the workpiece conveyed by the motor roller. Coated urethane layer protects the workpiece from damage.
Related Industries
Related Products
| Resin Collar Standard | Stopper bolt with urethane Straight type | Urethane molded bearing Inner wheel protruded For heavy load | ||
 |  |  | ||
| Typical model: CLJJ10-16-20.0 | Typical model: UST8-40 | Typical model: UMRHW40 | ||
| Advantages: Optional inner and outer diameter and height, better price | Suitable for conveying heavy load workpieces, compact tip, usable in narrow spaces | Suitable for conveying heavy load workpieces |
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