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

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. 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.

Description

3B QD Bushed Sheaves

3B QD Bushed Sheaves pulleys are making 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 working with SH, SDS, SK, SF, or E QD bushings, which we also stock. Most of our three-groove 3B QD bushed pulleys are making from a high-strength grade 35 cast iron, with phosphate-coated and painted for anti-corrosion. Balance the sheaves 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

3B QD Bushed Sheaves

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

  1. Making the A-B Combination Pulleys in 1 through 10 grooves
  2. QD Bushings provide inventory flexibility by just changing out the bore size of the bushing.
  3. 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
  4. Sheaves are balanced & accurately machined to minimize vibration
  5. Largest selection of products of any Sheave Manufacturer assurance to have the best effect for specific application and most economical drive design
  6. 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 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

Warehouse Stock

The warehouse covers an area of 5000 square meters. We 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. By sea or air shipment.

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Packing&Shipping & Delivery

china Packing Shipping Delivery

Packing Shipping Delivery

Chains package: First we will use carton package the chains--------then put in wooden box.
We also can custom color package according to your demand
Company Profile
Company Profile
FAQ

How to choose power transmissions parts and industrial products which meet our requirement

Chains Sprockets Pulleys Timing belt Pulley V-belt Pulley
Sheaves Coupings Bush &Hub Gear& Rack V-Belt
Locking Assembly Pulley Gearbox Reducer Shaft Collar
Rod End Bearing Clevis PTO Chain Guide Belt Guide
Rubber Buffer Chain Tensioner PTO Drive Shafts Universal Joints Roller Chains
Conveyor Chains V-Belts Worm Gearbox Helical Gear Worm
Agricultural Chain CNC Proces Parts Casting Stamping
Powder Metallurgy CNC Proces Parts Casting Stamping

What Products Do you sell ? 

We  are a group of factories, give customer one stop solution of power transmission and industrial products. We are in the position to supply wide range of products, including chains, sprockets, v-belt and v-belt pulleys, timing belt and timing belt pulleys, gears, speed reducers, motors, racks, couplings, and many other parts, like locking assembly, taper bushing, Chain guide, shaft collar, torque limiter, cam clutch, universal joint, motor base and motor slide, rod end, clevis, rubber mount, etc. We make special parts according to drawings and/or samples.

How to choose a gearbox which meets our requirement?
You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
the technical information of required output torque, output speed and motor parameter etc.

What information shall we give before placing a purchase order?
a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor informationetc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.

What industries are your gearboxes being used?
Our gearboxes are widely used in the areas of textile, food processing, beverage, chemical industry,
escalator,automatic storage equipment, metallurgy, tabacco, environmental protection, logistics and etc.

What is the producing process?

Production process including raw material cutting, machine processing, grinding, accessories cleaning, assemble, cleaning, stoving, oil coating, cover pressing, testing, package.

How to control the products quality?

Combining advanced equipment and strict management, we provide high standard and quality bearings for our customers all over the world.

What is the transportation?

-If small quantity , we Suggest to send by express, such as DHL,UPS, TNT FEDEX. If large amount, by air or sea shipping.

Can we design packaging?

-Yes. Default is regular packing, and we can make customer's own packing.

Can you provide OEM service?

-Yes, we work on OEM orders. Which means size, quantity, design, packing solution, etc will depend on your requests; and your logo will be customized on our products.

Can you give me discount on Power Transmissions Parts and Industrial parts?

-Yes, of course. Pls. send me your Email, you'll get more

Q: Are You a trading company or a manufacturer?

A: We Are the factory and have our Own trading company

Q: How Can I get an offer?

A: please send US quotation information: drawings, materials, weight, quantity and requirements, we can accept PDF, ISGS, DWG, STEP file format. If you don't have the drawings, please send us the samples, we can also quote you according to your samples.

Q: What is your minimum order size?

A: it is usually 100 pieces, but a low quantity is acceptable under some special circumstances.

Q: Do you provide samples? Is it free or extra?

A: Yes, we can provide samples free of charge, but we don't pay the freight.

Q: What is the lead time for mass production?

A: honestly, it depends on the number of orders. Normally, if you don't need the tools, deposit them after 30 days or so.

Q: What if the parts don't Work?

A: we can guarantee the quality, but if it happens, please contact us immediately, take some photos, we will check the problem and solve it as soon as possible.

Q: What are your terms of payment?

A: payment is less than US $1000,100% in advance. Payment: $1000,50% wire transfer in advance, balance before shipment,Other Terms of payment are negotiable