2B QD Bushed Sheaves Pulleys for “A” and “B” Belts

2B 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, or SF QD bushings, which we also stock. Most of our two-groove 2B 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.

2B Style QD Bushed Pulley Size Chart

Size	Bushing Type	Pulley Type	Pitch Diameter (5L/B)	Pitch Diameter (4L/ A)	Outside Diameter	(E)	(F)	(L)	(M)	Pulley Weight (LBS)
2B34SH	SH	E	3.4"	3.0"	3.75"	1-3/32"	1-3/4"	1-5/16"	21/32"	3.2
2B36SH	SH	D	3.6"	3.2"	3.95"	15/32"	1-3/4"	1-5/16"	29/32"	3.4
2B38SH	SH	D	3.8"	3.4"	4.15"	15/32"	1-3/4"	1-5/16"	29/32"	3.9
2B40SH	SH	A	4.0"	3.6"	4.35"	1/32"	1-3/4"	1-5/16"	13/32"	4.1
2B42SH	SH	A	4.2"	3.8"	4.55"	1/32"	1-3/4"	1-5/16"	13/32"	4.4
2B44SH	SH	A	4.4"	4.0"	4.75"	1/32"	1-3/4"	1-5/16"	13/32"	4.6
2B46SDS	SDS	A	4.6"	4.2"	4.95"	1/32"	1-3/4"	1-5/16"	13/32"	5.0
2B48SDS	SDS	A	4.8"	4.4"	5.15"	1/32"	1-3/4"	1-5/16"	13/32"	5.4
2B50SDS	SDS	A	5.0"	4.6"	5.35"	1/32"	1-3/4"	1-5/16"	13/32"	6.0
2B52SDS	SDS	A	5.2"	4.8"	5.55"	1/32"	1-3/4"	1-5/16"	13/32"	6.3
5B54SDS	SDS	A	5.4"	5.0"	5.75"	1/32"	1-3/4"	1-5/16"	13/32"	6.6
2B56SDS	SDS	A	5.6"	5.2"	5.95"	1/32"	1-3/4"	1-5/16"	13/32"	6.9
2B58SDS	SDS	A	5.8"	5.4"	6.15"	1/32"	1-3/4"	1-5/16"	13/32"	7.2
2B60SDS	SDS	A	6.0"	5.6"	6.35"	1/32"	1-3/4"	1-5/16"	13/32"	7.5
2B62SDS	SDS	A	6.2"	5.8"	6.55"	1/32"	1-3/4"	1-5/16"	13/32"	7.8
2B64SDS	SDS	A	6.4"	6.0"	6.75"	1/32"	1-3/4"	1-5/16"	13/32"	8.2
2B66SDS	SDS	A	6.6"	6.2"	6.95"	1/32"	1-3/4"	1-15/16"	13/32"	8.6
2B68SDS	SDS	A	6.8"	6.4"	7.15"	1/32"	1-3/4"	1-15/16"	13/32"	9.0
2B70SK	SK	D	7.0"	6.6"	7.35"	11/32"	1-3/4"	1-15/16"	5/32"	9.3
2B74SK	SK	D	7.4"	7.0"	7.75"	11/32"	1-3/4"	1-15/16"	5/32"	10.6
2B80SK	SK	D	8.0"	7.6"	8.35"	11/32"	1-3/4"	1-15/16"	5/32"	11.0
2B86SK	SK	D	8.6"	8.2"	8.95"	11/32"	1-3/4"	1-15/16"	5/32"	11.6
2B94SK	SK	D	9.4"	9.0"	9.75"	11/32"	1-3/4"	1-15/16"	5/32"	13.0
2B110SK	SK	D	11.0"	10.6"	11.35"	11/32"	1-3/4"	1-15/16"	5/32"	14.0
2B124SK	SK	D	12.4"	12.0"	12.75"	11/32"	1-3/4"	1-15/16"	5/32"	18.0
2B136SK	SK	D	13.6"	13.2"	13.95"	11/32"	1-3/4"	1-15/16"	5/32"	20.0
2B154SK	SK	D	15.4"	15.0"	15.75"	11/32"	1-3/4"	1-15/16"	5/32"	23.0
2B160SK	SK	D	16.0"	15.6"	16.35"	11/32"	1-3/4"	1-15/16"	5/32"	24.0
2B184SK	SK	D	18.4"	18.0"	18.75"	11/32"	1-3/4"	1-15/16"	5/32"	29.0
2B200SF	SF	D	20.0"	19.6"	20.35"	15/32"	1-3/4"	2-1/16"	5/32"	33.0
2B250SF	SF	D	25.0"	24.6"	25.35"	15/32"	1-3/4"	2-1/16"	5/32"	41.0
2B300SF	SF	D	30.0"	29.6"	30.35"	15/32"	1-3/4"	2-1/16"	5/32"	51.0
2B380SF	SF	D	38.0"	37.6"	38.35"	15/32"	1-3/4"	2-1/16"	5/32"	64.0

Features of QD Sheaves

QD conventional sheaves are offered in AB combination grooves with 1 thru 6 grooves and 8 and 10 grooves, and C grooves with 1 thru 6 grooves and 8 and 10 grooves. Styles depending on size include solid, web, and spoke design. Outside diameters range from 3.75" to 50.4" with the most popular sizes. These sheaves are designed to be used with QD bushings. "H" bushings are available. All industry standard QD bushings are available in standard, and  Splined and hex bores are also available by quotation. Do not use with rim speeds over 6500 feet per minute.

Common Applications

• Machine tools
• Crushers, shredders, breakers, classifiers, shaker screens
• Material conveyor systems
• Fans, blowers, and exhausters
• Pumps and compressors
• Woodworking saws, mills, planers, lathes

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.

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.