Rubber-coated Rollers with Keyway

Brand :

MISUMI

Caution

Product Description

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

■ Straight Cylindrical Type	■ Threaded Hole Type	■ Keyway dimensions

When L ≤ d × 3, the d hole is machined from a single direction.

When L>d × 3, the d hole is machined from both sides, as shown in the diagram above. In some cases, there may be no clearance machining.

There are different machining processes for the keyway, so the appearance of the keyway hole may vary.

Specification Overview

		Material		Hardness
Straight Cylindrical	Threaded Hole	Core Material	Lining	Hardness
E-ROUAK	E-ROUAKN	Aluminum alloy	Polyurethane (green)	Shore A90
E-ROGAK	E-ROGAKN	Aluminum alloy	Polyurethane (black)	Shore A70

Due to previous omissions in translating the hardness unit Shore A, the term 'Xiao's hardness' has now been officially corrected to 'Shore hardness.' Updates to electronic and printed catalogs may be delayed; please refer to the website for the most accurate information.

Specification Table

Part Number			d_H8 selection						L selection											T	M
Type		D	d_H8 selection						L selection											T	M
Straight Cylindrical E-ROUAK E-ROGAK	Threaded Hole E-ROUAKN E-ROGAKN	20	8						15	20	25	30	40	50	60	70	80	90	100	3	3
		25	8	10	12				15	20	25	30	40	50	60	70	80	90	100
		30	8	10	12	15			15	20	25	30	40	50	60	70	80	90	100
		35		10	12	15	20			20	25	30	40	50	60	70	80	90	100
		40		10	12	15	20			20	25	30	40	50	60	70	80	90	100		4
		50			12	15	20	25			25	30	40	50	60	70	80	90	100		4

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: Compared to metal rollers, polyurethane rollers are less likely to transmit vibration and noise.
Feature 3: Polyurethane has low dust generation.
Feature 4: The hardness can be easily identified by the color of the polyurethane (green: A90; black: A70), and it does not experience the yellowing phenomenon that occurs with natural-colored polyurethane.

Precautions

(1) The economical polyurethane roller uses ether-based polyurethane, which is resistant to hydrolysis and can be used in slightly humid environments.
(2) Please refer to the actual product for material color.
(3) For dimensions without specified tolerances in the drawing, general tolerances apply.

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

Smartphones		Semiconductors

Economy Type Molded Roller with Bearing	Economy Type Guide Roller, Vertical	Economy Type Pipe Roller with Bearing

Representative Model: C-RORUA25-30	Representative Model: E-TGRAU30-30	Representative Model: E-RORLAG20-T3-6-200