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Urethane Molded Rollers With Bearings (C-RORGA30-20)

Product Overview
 
Polyurethane is sintered onto the outer circumference of the core material to form a high-adhesion coated layer, creating a bearing-type roller suitable for transporting and sliding various workpieces.
 
Dimensional Drawing
 
polyurethaneBearing is a non-metallic elastomer
The core material has no surface treatment.
Bearing material: SUJ2.
Polyurethane is ether-based polyurethane.
(dh) size is for reference only.
 
TypeBushingCore MaterialBearing Material
MaterialHardnessColorMaterialSurface Treatment
C-RORUSEther-based
polyurethane
Shore A90GreenStainless steelNoSUJ2
C-RORUAAluminum alloy
C-RORGSShore A70BlackStainless steel
C-RORGAAluminum alloy
C-RORSASiliconeShore A70Light grayAluminum alloy
C-RORNANBRShore A60BlackAluminum alloy
 
Specification Table
 
TypeLength L SelectiondD1(dh)BNominal bearing
model
Number of
bearings
TypeOuter Diameter D
C-RORUS
C-RORUA
C-RORGS
C-RORGA
C-RORSA
C-RORNA
2520(25)304050 615105696ZZ2
3020(25)304050 819156698ZZ
35 (25)304050 1022186900ZZ
40 (25)30405010012282486001ZZ
50 (25)30405010015322896002ZZ
(25) Applicable only to C-RORSA/C-RORNA.
(dh) Dimensions are not machined because the core material is extruded tubing. For reference dimensions only. Please refer to the actual product for material color.
Polyurethane is sintered on the outer periphery of the core material.
For detailed bearing dimensions, please refer to (Economy Type) Small Diameter Double Shielded Ball Bearings.
(Economy Type) Deep Groove Double Shielded Ball Bearings.
No surface treatment on the core material.
Bearing material: SUJ2.  
Product Features
 
Feature 1: The polyurethane layer is directly sintered onto the outer circumference of the core material, making it difficult to peel off.
Feature 2: Thanks to its excellent mechanical strength and wear resistance, polyurethane is widely used to prevent scratches and cracks when transporting fragile items such as glass and acrylic.
Feature 3: Compared to metal rollers, polyurethane rollers are less likely to transmit vibrations and noise.
Feature 4: Polyurethane has low dust generation.
Feature 5: Using ether-based polyurethane, it maintains high mechanical strength and wear resistance, while offering better hydrolysis resistance and lower environmental requirements compared to ester-based polyurethane.
 
polyurethaneBearing is a non-metallic elastomer
*1 Radial runout is a reference value and not a guaranteed value.

■ Solving your concerns when selecting coated rollers
polyurethaneBearing is a non-metallic elastomer
*Market-available products refer to similar items randomly purchased by our company from online or offline markets.

Characteristics Table
Detailed explanation of MISUMI polyurethane characteristic chart
 
Precautions
 
(1) The economical polyurethane roller uses ether-based polyurethane, which is resistant to hydrolysis and has lower environmental requirements. However, since the bearing position is made of SUJ2 material, rust prevention is still necessary.
(2) Please refer to the actual product for material color.
(3) The (dh) dimension is for reference only, as the core material is extruded tubing and is not machined. For reference dimensions only.
(4) For dimensions on the drawing without specified tolerances, general tolerances (medium grade) are applied.
 
Example of Use
 
Detailed case studies of MISUMI polyurethane roller transfer mechanisms
Mechanism name: Pallet Vertical Transfer Mechanism
Function of the mechanism:
Lifts the workpiece on the conveyor and changes the conveying direction.
Function of the polyurethane roller:
Receives the workpiece delivered by the motorized roller. Protects the workpiece from damage with a coated polyurethane layer.
For more details, please click No.000216 Pallet Vertical Transfer Mechanism
 
Application Industries
 
Electronics Automotive
Widely used in the manufacturing of electronic and electrical products, with high acceptance. Shafts for urethane mold bearing Commonly used in the automotive industry and other industrial fields such as automobile manufacturing. Engineering plastics bearing
Smartphones Semiconductors
Widely used in fields such as smartphones and well received by the public. Guide rollers Widely used and highly praised in the semiconductor industry, semiconductor field, and semiconductor equipment. Conveyor rollers, press wheels with bearings type
 
Related Products
 
Resin Collar Standard Type Straight Rod Type with Urethane Stopper Bolt Urethane Molded Bearing, Protruding Inner Ring, Heavy-Duty Type
Detailed specifications for resin shaft rings Specifications for straight rod type with polyurethane stop bolt Detailed specifications for heavy-duty polyurethane molded bearings with protruding inner wheel
Representative Model: CLJJ10-16-20.0 Representative Model: UST8-40 Representative Model: UMRHW40
Advantages: Selectable inner and outer diameters and height, more competitive price Suitable for conveying heavy workpieces with a compact front end; can be used in narrow spaces Suitable for conveying heavy workpieces
 

Part Number 

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Part Number
C-RORGA30-20
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipO.D.
(mm)
Inner Dia. d
(mm)
Length L
(mm)
Core Material / Urethane Hardness (Color)

MYR 27.17

1 Piece(s)Available 1 Day(s) 30820Aluminum Alloy / Shore A70 (Black)

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Basic Information

Mounting Method With Bearings Roller Type Urethane / Rubber Roller Roller Shape Straight
Urethane Rubber Processing Lining Surface Treatment Not Provided Bearing Material Steel

Please check the type/dimensions/specifications of the part C-RORGA30-20 in the Urethane Molded Rollers With Bearings series.

Frequently asked question (FAQ)

Question: Is there a big difference in hardness and wear resistance between economy series urethane rollers and existing products from MISUMI?
Answer: The urethane liner of the economy series urethane roller does not use hardener to adjust the hardness, and instead the raw materials of corresponding hardness are purchased directly. The results of the laboratory test show that the hardness stability is good and the deviation is small, and the wear resistance is almost the same as that of MISUMI existing products.
Question: Urethane (natural color) has a very big color difference, does it affect the use? Is it possible to unify the color?
Answer: Since urethane (natural color) itself has the characteristics of yellowing, there will be different color differences, and the color can not be unified.
But it does not affect its own performance and normal use. If you really care about the color, it is recommended to buy economy series urethane roller, and change the natural color yellowing phenomenon through coloring.
Question: Can urethane be wiped with alcohol?
Answer: Yes, only a small amount of alcohol can be applied for wiping.
Urethane is a chemical resistant material, susceptible to corrosion. It can be dried or placed naturally after applying a small amount of alcohol. Other highly corrosive chemicals can not be applied even in small amounts.
Question: With the rise of the hardness of urethane, does the friction rise?
Answer: No, urethane is an elastomer, and the lower the hardness, the higher the friction.
Question: If there is a large axial load in the scenario of use, which urethane roller product should be selected?
Answer: There are urethane sintered bearing roller and urethane bonded bearing roller. If the axial load is large or the working condition is bad, the urethane bonded bearing roller may be degummed. If you have higher requirements for urethane adhesion, please choose Sintered Urethane Roller.

Check other FAQ (2 items) Hide

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