Polyurethane Round Belt Open End

MISUMI

Product Overview

A round belt is a rope-like belt with a circular cross section. Used in conjunction with pulleys and idler wheels, it is widely applied for conveying lightweight objects and for angle transmission purposes.
Easy installation—belts can be replaced without disassembling the machine, offering excellent maintainability.

Dimensional Drawing

Round Belt Joint Product and Free End Product Dimension Diagram

Specification Overview

■ Material Table
Free End Products

Type	Shape	Color	Material	Heat resistant temperature
E-MBT-N	Standard	Orange	Urethane	50°C

Specification Table

Part Number		L (Perimeter) Unit: 1 m	Pulley Minimum P.D.	5% Tension (N)
Type	d	L (Perimeter) Unit: 1 m	Standard	Standard
E-MBT-N	2	10 to 20	12	1.9
	2.5		20.5	2.4
	3		23	4.1
	3.5		29	4.7
	4		30	7.4
	5		40	12.5
	6		50	16.6
	7		60	22.6
	8		70	29.4
	9		85	37.5
	10		95	46.2
	12		107	66.5
	15		143	104

Product Features

Feature 1:	Round belt length is flexible and can be cut to the specified length You can freely choose the conveyor belt length without being restricted by standard sizes, allowing for designs that maximize machine performance.
Feature 2:	Multi-axis Transmission/3D Transmission Possible The cross-section has no directionality, enabling multi-axis transmission and complex three-dimensional transmission by changing direction with idler wheels.
Feature 3:	Easy to install and manage Can be installed without disassembling the machine, with fewer complicated tasks such as tension adjustment.
Feature 4:	Excellent mechanical properties Uses polyurethane with outstanding wear resistance and tear resistance.

Usage Method

■ Simple Steps for Selecting Round Belts
(1) Determine the transmission power (or motor rated power)
(2) Confirm the diameter of the small pulley
(3) Calculate the tension borne by the belt
(4) Select a belt with allowable tension greater than the tension calculated in step (3)
(5) Finalize the belt selection
For details, please refer to

Steps for Selecting Round Belts

Precautions

■ Features of Economy Polyurethane Round Belt
· Physical Properties

			kgf=N×0.101972
Item	Standard	Unit	E-MBT E-MBT-N
Hardness	ASTM D2240	Shore A	87
100%"	ASTM D412	N/mm²	6.05
300%"			16.9
Tensile Strength			Above 24.5
Elongation at Break		%	Above 400

· Tension

Test Conditions:
Temperature: (23±2)°C ; Relative Humidity: (50±10)%RH

Test method: Refer to ASTM D412-16(2021)
Test speed: 50 mm/min
Test sample: Diameter (d) 6 mm
*The tension value is the measured value of the test sample under test conditions and is not a guaranteed value. For reference only.

■Precautions for storage
①Avoid sunlight.
(2) Please store in a place protected from rain.
(3) Please store in a place with humidity below 80% and temperature between 0 to 40°C
(4) Do not stack in large quantities or bend forcibly.
⑤Do not place it directly on the ground.
(6) Do not make the belt contact with oil or chemicals.

Example of Use

For conveying lightweight objects and inclined angles
Example of round belt used for conveying food and other lightweight items

Round belts are used for conveying items such as cartons

Economy Type Polyurethane Round Belt Fusion Spliced Product	(Economy series) Round belt pulley Clamping type	Economy Pulley for Round Belt, Screw-Fixed Type

Representative Model: E-MBT4-500	Representative Model: E-MBRDC40-2.5-8	Representative Model: E-MBRDFM40-2.5-C10