3B Gripbelt Sheaves with Split Taper Bushings for Use with All “A” and “B” Section Belts

3B series pulleys are manufactured for A, AX, AA, 4L, B, BX, BB, and 5L v-belts, ranging from 5.75" to 38.35" in diameter. Depending on the pulley size, they are made to use with R1 taper bushings or Q1 taper bushings, which we also stock. Most of our three-groove 3B split taper bushed pulleys are manufactured from a high-strength grade 35 cast iron, are phosphate-coated, and are painted for anti-corrosion. All of them are balanced at the factory for smooth machinery operation.

3B Style Pulley Size Chart

Size	Bushing Type	Pitch Diameter (A/ 4L)	Pitch Diameter (B/ 5L)	Outside Diameter	Type	(O.L.)	(L)	(P)	(C)	(H)	(F)	(G)	(X)	(E)	Weight (LBS)
3B54Q	Q1	5.0"	5.4"	5.75"	5	3-17/32"	2-1/2"	3/4"	3/4"	4-1/8"	2-1/2"	--	1-3/4"	9/32"	7.9
3B56Q	Q1	5.2"	5.6"	5.95"	5	3-17/32"	2-1/2"	3/4"	3/4"	4-1/8"	2-1/2"	--	1-3/4"	9/32"	9.0
3B58Q	Q1	5.4"	5.8"	6.15"	13	3-5/32"	2-1/2"	3/8"	3/8"	4-1/8"	2-1/2"	3/4"	1-3/4"	9/32"	9.4
3B60Q	Q1	5.6"	6.0"	6.35"	13	3-5/32"	2-1/2"	3/8"	3/8"	4-1/8"	2-1/2"	3/4"	1-3/4"	9/32"	10.4
3B62Q	Q1	5.8"	6.2"	6.55"	13	3-5/32"	2-1/2"	3/8"	3/8"	4-1/8"	2-1/2"	3/4"	1-3/4"	9/32"	11.3
3B64Q	Q1	6.0"	6.4"	6.75"	13	3-5/32"	2-1/2"	3/8"	3/8"	4-1/8"	2-1/2"	3/4"	1-3/4"	9/32"	12.1
3B66Q	Q1	6.2"	6.6"	6.95"	13	3-5/32"	2-1/2"	3/8"	3/8"	4-1/8"	2-1/2"	3/4"	1-3/4"	9/32"	13.0
3B68Q	Q1	6.4"	6.8"	7.15"	13	3-5/32"	2-1/2"	3/8"	3/8"	4-1/8"	2-1/2"	3/4"	1-3/4"	9/32"	14.3
3B154R	R1	15.0"	15.4"	15.75"	13	3-13/32"	2-7/8"	5/8"	1/4"	5-3/8"	2-1/2"	7/8"	2"	9/32"	35.5
3B160R	R1	15.6"	16.0"	16.35"	13	3-13/32"	2-7/8"	5/8"	1/4"	5-3/8"	2-1/2"	7/8"	2"	9/32"	38.0
3B184R	R1	18.0"	18.4"	18.75"	13	3-13/32"	2-7/8"	5/8"	1/4"	5-3/8"	2-1/2"	7/8"	2"	9/32"	44.8
3B200R	R1	19.5"	20.0"	20.35"	13	3-13/32"	2-7/8"	5/8"	1/4"	5-3/8"	2-1/2"	7/8"	2"	9/32"	50.3
3B250R	R1	24.5"	25.0"	25.35"	13	3-13/32"	2-7/8"	5/8"	1/4"	5-3/8"	2-1/2"	7/8"	2"	9/32"	65.0
3B300R	R1	29.5"	30.0"	30.35"	13	3-13/32"	2-7/8"	5/8"	1/4"	5-3/8"	2-1/2"	7/8"	2"	9/32"	89.0
3B380R	R1	37.5"	38.0"	38.35"	13	3-13/32"	2-7/8"	5/8"	1/4"	5-3/8"	2-1/2"	7/8"	2"	9/32"	106.0

V-belt and V-belt Pulleys

In the early days of automation, the v-belt was developed to increase accuracy and torque transmission from the crankshaft to rotating assemblies. It is a mechanical linkage with a cross-section and has a shape that emulates an isosceles trapezoid. V-Belts provide impeccable speed, traction, load capabilities, and extended service life.V-belt pulleys are used to transmit power between axles using the v-belt. Their function is solely to transfer energy between the two parallel axles. Depending on your specific application, there are many different sizes and types of v belt pulleys to choose from.With its complementing pulley, the v-belt creates a streamlined belt drive. The devices resist slipping and misalignment, making a reliable high-speed power transmission solution.Raydafon has a wide variety of v-belts and v-belt pulleys to choose from.

V-belt Pulley Advantages & Disadvantages

V-belt drive advantages	V-belt drive disadvantages
Minimal maintenance w/ no lubrication	Approx. temperature limit of 140° F
Extremely reliable	Pulleys must be somewhat larger than in other belt drives
Gradual wear, which is easily identified	Center distance between pulleys is limited (no more than 3x the diameter of the largest pulley
Wide horsepower and speed range	Usually more expensive than other drives
Quiet operation	Only acceptable for parallel shafts
Vibration dampening
Prevents overload

Technological Processing

Company Profile

Raydafon is a professional manufacturer of mechanical parts. Our main products are belt pulleys, sprockets, taper sleeves, coupling, and other transmission parts. Its products are mainly exported to Germany, Britain, France, and other European countries, with an annual export value of 18 million U.S. dollars, accounting for more than 65% of the total output. The annual output value reached 200 million yuan.Our products all adopt international, European, and American advanced industrial standards, use precise and good processing equipment, develop reasonable production technology, apply efficient and flexible management systems, and improve the quality management system to ensure that the product quality is good and the price is affordable.Our factory adheres to the enterprise concept of "quality: the basis of enterprise survival, integrity: the basis of enterprise development, service: the source of enterprise development, low price: the instrument of enterprise development." We are always looking forward to the presence of customers at home and abroad, seeking win-win benefits and joint cause development.

Warehouse Stock

The warehouse covers an area of 5000 square meters and can provide all kinds of standard models A/B/C/Z, with complete quantity and large quantity in stock. Meanwhile, it accepts all sorts of non-standard customization for drawing production. The daily production capacity is 10 tons, and the delivery time is short.

Packaging & Shipping

Experienced Workers Packing Pulleys Carefully, safe wooden cases keep parts from being injured or damaged during sea or air shipment.