3B QD Bushed Sheaves Pulleys for “A” and “B” Belts

Elevate your machinery's performance with Raydafon Group's 3B QD Bushed Sheaves Pulleys, designed for “A” and “B” belts. These precision-engineered pulleys ensure seamless power transmission and extended belt life, perfect for industrial and automotive applications. Experience unmatched durability and efficiency—transform your operations today.

Send Inquiry

Product Description

3B series pulleys are manufactured for A, AX, AA, 4L, B, BX, BB, and 5L v-belts, ranging from 3.75" to 38.35" in diameter. Depending on the pulley size, they are made to use with SH, SDS, SK, SF, or E QD bushings, which we also stock. Most of our three-groove 3B QD 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. The main benefit of using a QD (quick detachable) pulley is that if the bushing (hub) breaks, you don't have to replace the whole assembly, or if just the pulley gets worn out, the same principle applies. The other significant benefit is that there is a broader range of bore options with QD pulleys than with the "fixed-bore" style.

3B Style QD Bushed Pulley Size Chart

Size	Bushing Type	Pulley Type	Pitch Diameter (B)	Pitch Diameter (A)	Outside Diameter	(E)	(F)	(L)	(M)	Pulley Weight (LBS)
3B34SH	SH	E	3.4"	3.0"	3.75"	1-27/32"	2-1/2"	1-5/16"	21/32"	4.4
3B36SH	SH	D	3.6"	3.2"	3.95"	15/32"	2-1/2"	1-5/16"	1-21/32"	4.7
3B38SH	SH	D	3.8"	3.4"	4.15"	15/32"	2-1/2"	1-5/16"	1-21/32"	5.3
3B40SH	SH	D	4.0"	3.6"	4.35"	15/32"	2-1/2"	1-5/16"	1-21/32"	5.6
3B42SH	SH	D	4.2"	3.8"	4.55"	15/32"	2-1/2"	1-5/16"	1-21/32"	5.9
3B44SH	SH	D	4.4"	4.0"	4.75"	15/32"	2-1/2"	1-5/16"	1-21/32"	6.3
3B46SD	SD	A	4.6"	4.2"	4.95"	13/32"	2-1/2"	1-13/16"	9/32"	6.7
3B48SD	SD	A	4.8"	4.4"	5.15"	13/32"	2-1/2"	1-13/16"	9/32"	7.1
3B50SD	SD	A	5.0"	4.6"	5.35"	13/32"	2-1/2"	1-13/16"	9/32"	7.4
3B52SD	SD	A	5.2"	4.8"	5.55"	13/32"	2-1/2"	1-13/16"	9/32"	7.8
3B54SD	SD	A	5.4"	5.0"	5.75"	13/32"	2-1/2"	1-13/16"	9/32"	8.2
3B56SD	SD	A	5.6"	5.2"	5.95"	13/32"	2-1/2"	1-13/16"	9/32"	8.5
3B58SD	SD	A	5.8"	5.4"	6.15"	13/32"	2-1/2"	1-13/16"	9/32"	8.8
3B60SD	SD	A	6.0"	5.6"	6.35"	13/32"	2-1/2"	1-13/16"	9/32"	9.1
3B62SD	SD	A	6.2"	5.8"	6.55"	13/32"	2-1/2"	1-13/16"	9/32"	9.4
3B64SD	SD	A	6.4"	6.0"	6.75"	13/32"	2-1/2"	1-13/16"	9/32"	9.7
3B66SD	SD	A	6.6"	6.2"	6.95"	13/32"	2-1/2"	1-13/16"	9/32"	10.0
3B68SD	SD	B	6.8"	6.4"	7.15"	13/32"	2-1/2"	1-13/16"	9/32"	10.5
3B70SK	SK	D	7.0"	6.6"	7.35"	3/32"	2-1/2"	1-15/16"	21/32"	11.0
3B74SK	SK	D	7.4"	7.0"	7.75"	3/32"	2-1/2"	1-15/16"	21/32"	12.0
3B80SK	SK	D	8.0"	7.6"	8.35"	3/32"	2-1/2"	1-15/16"	21/32"	12.5
3B86SK	SK	D	8.6"	8.2"	8.95"	3/32"	2-1/2"	1-15/16"	21/32"	13.0
3B94SK	SK	D	9.4"	9.0"	9.75"	3/32"	2-1/2"	1-15/16"	21/32"	16.0
3B110SK	SK	D	11.0"	10.6"	11.35"	3/32"	2-1/2"	1-15/16"	21/32"	19.0
3B124SK	SK	D	12.4"	12.0"	12.75"	3/32"	2-1/2"	1-15/16"	21/32"	24.0
3B136SK	SK	D	13.6"	13.2"	13.95"	3/32"	2-1/2"	1-15/16"	21/32"	27.0
3B154SK	SK	D	15.4"	15.0"	15.75"	3/32"	2-1/2"	1-15/16"	21/32"	30.0
3B160SK	SK	D	16.0"	15.6"	16.35"	3/32"	2-1/2"	1-15/16"	21/32"	33.0
3B184SK	SK	D	18.4"	18.0"	18.75"	3/32"	2-1/2"	1-15/16"	21/32"	38.0
3B200SF	SF	D	20.0"	19.6"	20.35"	7/32"	2-1/2"	2-1/16"	21/32"	43.0
3B250SF	SF	D	25.0"	24.6"	25.35"	7/32"	2-1/2"	2-1/16"	21/32"	54.0
3B300SF	SF	D	30.0"	29.6"	30.35"	7/32"	2-1/2"	2-1/16"	21/32"	67.0
3B380E	E	D	38.0"	37.6"	38.35"	17/32"	2-1/2"	2-3/4"	9/32"	90.0

A-B Combination QD Bushing Type Pulleys

• A-B Combination Pulleys are offered in 1 through 10 grooves• QD Bushings provide inventory flexibility by just changing out the bore size of the bushing.• Combination groove on the A-B Sheaves can accommodate a wide assortment of belts (4L, 5L, A, AX, B & BX) for maximum flexibility and horsepower range• Sheaves are balanced & accurately machined to minimize vibration• Largest selection of products of any Sheave Manufacturer assurance to have the best effect for specific application and most economical drive design• First in the industry to provide sheaves with the durability of a powder coat paint, which protects products from rusting in high moisture environments

How is QD Bushing Different from Taper Bushing?

QD bushing is also known as flange bushing. There are specific differences between Taper bushing and QD bushing. The primary difference between the two types of the bushing is the existence of a flange in QD bushing. The QD style has a flange around the outside diameter, whereas, in the case of taper lock, the bushing has straight sides on the outer diameter.QD bushing uses the external hex to drive it into the bore of the component that has been installed. In the case of taper bushing, the internal head cap screw is used to drive it into the bore that has been installed. Using external hex by QD bushing helps get a larger bore capacity than taper lock bushing.The difference between the QD bushing and taper bushing is mainly due to the existence of an external key. This helps QD bushing to have excellent torque carrying capability.

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. 3B QD Bushed Sheaves Pulleys for “A” and “B” Belts

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. 3B QD Bushed Sheaves Pulleys for “A” and “B” Belts

Packaging & Shipping

Experienced Workers Packing Pulleys Carefully, safe wooden cases keep parts from being injured or damaged during sea or air shipment. 3B QD Bushed Sheaves Pulleys for “A” and “B” Belts

FAQ

Q1. Are you a manufacturer or a trading company?A: We are a manufacturer and trading company.Q2. What is your sample policy?A: We can supply the sample if we have finished parts in stock, but customers need to pay for the sample cost and shipping fee.Q3. Can you produce according to the samples?A: We can produce power transmission parts according to your samples or technical drawings. We can build the molds and fixtures.Q4. Do you test all your goods before delivery?A: Yes, we have 100% test before delivery.Q5. Can you customize pulleys?A: Yes, please send us your drawing for an accurate quotation.Q6. How long is your delivery time and shipment?A: 1. Sample Lead-times: 10-20 days.2. Production Lead-times: 30-45 days after the order is confirmed.Q7. How do you make our business a long-term and good relationship?A: 1. We keep good quality and competitive price to ensure our customers' benefits ;2. We respect every customer as our friend and sincerely do business and make friends with them, no matter where they come from.Q8: What are your advantages?1. The most competitive price and good quality.2. Perfect technical engineers give you the best support.3. OEM is available.

Hot Tags: 3B QD Bushed Sheaves Pulleys, A and B Belt Sheaves Wholesale, Customized Sheaves for V-Belts