Round Belt Pulley - Double Groove, Set Screw Type

MISUMI

Product Overview

Pulley for round belts is a rotating component that connects to the shaft using set screws. There are U-shaped grooves and non-slip trapezoidal grooves.
Widely used with round belts for conveying lightweight objects, angle transmission, and other applications.

Dimensional Drawing

Material Specifications

■Material Table

Type	Material	Surface Treatment	Accessories
E-MBWAC	Aluminum	Clear Anodized Treatment	2 set screws (SCM435 black oxide film)
E-MBWS	Stainless Steel	-	2 set screws (SUS304)

If there are requirements for rust prevention, give priority to products with hard chrome plating, electroless nickel plating surface treatment, or stainless steel SUS3 series materials.
Please refer to

Anti-rust performance and maintenance of metal materials and surface treatment

Specification Table

Part Number		R	Shaft Hole Specifications · Inner Diameter	S	D	D₁	D₂	L	ℓ	B	M (Coarse Thread)	Accessories Set Screw	Applicable Round Belt Diameter
Type	P.D.		P_(H8) can be specified down to 1 mm increments
E-MBWAC E-MBWS	15	1.1	3 to 8	4	12	17	13	14	3	5.8	M3	M3 × 3	2
	20		4 to 10		16	22	18
	30		4 to 12		20	32	28
	20	1.6	3 to 10	5	16	22	17	16	3	5.8	M3	M3 × 3	3
	30		5 to 12		20	32	27
	40					42	37
	45		5 to 20		30	47	42
	23	2.1	5 to 12	6	20	25	19	18	3	5.8	M3	M3 × 3	4
	28					30	24
	30					32	26
	40					42	36
	45		5 to 18		25	47	41	20	4	7.8	M4	M4 × 3
	48		5 to 20		30	50	44
	28	2.6	5 to 12	7	20	30	23	20	3	5.8	M3	M3 × 3	5
	40		5 to 20		30	42	35	22	4	7.8	M4	M4 × 3
	50					52	45
	28	3.1	5 to 12	8	22	30	22	22	3	5.8	M3	M3 × 3	6
	38		5 to 20		30	40	32	24	4	7.8	M4	M4 × 3
	48					50	42
	50					52	44
	60					62	54
	75					77	69
	100					102	94
	50	4.1	5 to 20	10	30	52	42	30	5	9.8	M5	M5 × 4	8
	60					62	52
	100					102	92
	60	5.1	5 to 20	12	34	62	50	34	5	9.8	M5	M5 × 4	10
	100					102	90
	140					142	130

The shaft hole of E-MBWA may not have an electroless nickel plating layer.

Product Features

Pulleys for round belts are available in fixed screw type, clamping type, and double type.
Set Screw Type Features: A type that connects to the shaft using a set screw. There are two types: U-shaped grooves and non-slip trapezoidal grooves.

Differences Between U-Shaped Grooves and Trapezoidal Grooves

Differences Between U-Shaped Grooves and Trapezoidal Grooves

The U-groove type has only one contact point with the pulley, while the trapezoidal groove has three contact points with the pulley, thus increasing the slip torque.

Clamping type feature: Simply tighten the screw to connect the shaft to the axis. No machining of the shaft is required.
Dual type features: Can be used when belts are installed in a staggered arrangement.

Example of Use

Round Belt Conveyor for Handling Lightweight Items

Equipment Name: Round Belt Conveyor

Feature 1: Uses round belts and pulleys, along with idler wheels, to transport thin sheets and other plate-shaped or lightweight items.
Feature 2: To prevent the round belt from bending, idler wheels are arranged at equal intervals.
Feature 3: Selects polyurethane round conveyor belts suitable for transporting lightweight items, with excellent wear and oil resistance.
Feature 4: The conveyor frame is composed of two aluminum frames and two processed parts.
Feature 5: Conveyor structure allows for both forward and reverse operation.
For more details, please click

Round Belt Conveyor Case

Application Industries

Food	Semiconductor	Smart phone

Medical	Electronic & Electrical Appliances	Lithium battery

Pulley for Round Belt, Screw-Fixed Type	Flat belt, with anti-running rib	Urethane round belt, welded joint product Free end product, hollow rope type

Representative Model: MBR60-2-N12	Typical model: HBLTDS350-4.23	Typical model: MBT5-150
Recommended Reason: Available in U-shaped and trapezoidal grooves	Reasons for recommendation: anti-running rib design	Reasons for recommendation: rich specifications, excellent quality