4B QD Bushed Sheaves Pulleys for “A” and “B” Belts

4B 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. Most of our four-groove 4B QD bushed pulleys are manufactured from a high-strength grade 35 cast iron, are phosphate-coated, and are painted for anti-corrosion. 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.

Description

4B QD Bushed Sheaves

4B series pulleys(QD Bushed Sheaves) 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, SD, SK, SF, or E QD bushings, which we also stock. Most of our four-groove 4B 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.

4B Style QD Bushed Pulley Size Chart

4B QD Bushed Sheaves

Size
Bushing Type
Pulley Type
Pitch Diameter (5L/B)
Pitch Diameter (4L/ A)
Outside Diameter
(E)
(F)
(L)
(M)
Pulley Weight (LBS)
4B34SD SD E 3.4″ 3.0″ 3.75″ 2-15/32″ 3-1/4″ 1-13/16″ 1-1/32″ 5.5
4B36SD SD E 3.6″ 3.2″ 3.95″ 2-15/32″ 3-1/4″ 1-13/16″ 1-1/32″ 5.8
4B38SD SD E 3.8″ 3.4″ 4.15″ 2-15/32″ 3-1/4″ 1-13/16″ 1-1/32″ 6.2
4B40SD SD E 4.0″ 3.6″ 4.35″ 2-15/32″ 3-1/4″ 1-13/16″ 21/32″ 6.6
4B42SD SD E 4.2″ 3.8″ 4.55″ 2-15/32″ 3-1/4″ 1-13/16″ 21/32″ 6.9
4B44SD
SD E 4.4″ 4.0″ 4.75″ 2-15/32″ 3-1/4″ 1-13/16″ 21/32″ 7.2
4B46SD SD A 4.6″ 4.2″ 4.95″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 7.6
4B48SD SD A 4.8″ 4.4″ 5.15″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 8.0
4B50SD SD A 5.0″ 4.6″ 5.35″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 8.4
4B52SD SD A 5.2″ 4.8″ 5.55″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 8.8
4B54SD SD A 5.4″ 5.4″ 5.75″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 9.2
4B56SD SD A 5.6″ 5.2″ 5.95″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 9.6
4B58SD SD A 5.8″ 5.4″ 6.15″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 10.0
4B60SD
SD A 6.0″ 5.6″ 6.35″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 10.4
4B62SD SD A 6.2″ 5.8″ 6.55″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 10.8
4B64SD SD A 6.4″ 6.0″ 6.75″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 12.0
4B66SD SD A 6.6″ 6.2″ 6.95″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 12.4
4B68SD SD A 6.8″ 6.4″ 7.15″ 21/32″ 3-1/4″ 1-13/16″ 25/32″ 13.0
4B70SK SK A 7.0″ 6.6″ 7.35″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 13.5
4B74SK SK A 7.4″ 7.0″ 7.75″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 14.0
4B80SK SK A 8.0″ 7.6″ 8.35″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 15.5
4B86SK SK A 8.6″ 8.2″ 8.95″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 17.0
4B94SK SK A 9.4″ 9.0″ 9.75″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 19.0
4B110SK SK A 11.0″ 10.6″ 11.35″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 22.0
4B124SK
SK A 12.4″ 12.0″ 12.75″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 29.0
4B136SK SK A 13.6″ 13.2″ 13.95″ 7/32″ 3-1/4″ 1-15/16″ 1-3/32″ 34.0
4B154SF SF A 15.4″ 15.0″ 15.75″ 5/32″ 3-1/4″ 2-1/16″ 1-1/32″ 39.0
4B160SF SF A 16.0″ 15.6″ 16.35″ 5/32″ 3-1/4″ 2-1/16″ 1-1/32″ 42.0
4B184SF SF A 18.4″ 18.0″ 18.75″ 5/32″ 3-1/4″ 2-1/16″ 1-1/32″ 47.0
4B200SF SF A 20.0″ 19.6″ 20.35″ 5/32″ 3-1/4″ 2-1/16″ 1-1/32″ 51.0
4B250E E D 25.0″ 24.6″ 25.35″ 5/32″ 3-1/4″ 2-3/4″ 21/32″ 73.0
4B300E E D 30.0″ 29.6″ 30.35″ 5/32″ 3-1/4″ 2-3/4″ 21/32″ 86.0
4B380E E D 38.0″ 37.6″ 38.35″ 5/32″ 3-1/4″ 2-3/4″ 21/32″ 109.0

4B QD Bushed Sheaves Pulleys
QD Bushed Pulleys are manufactured to exact tolerances. They are available with different diameters and can be statically balanced or dynamically balanced. These pulleys are manufactured from gray cast iron that ranges from GG 25 to GG 30. They have a strength of 207 Mpa and a hardness of 187 to 241.
QD Bushings have full split flanges on one side and a straight flange around the outside diameter. The flange is a tight fit and requires a hex head cap screw to install the component. When tightening the screws, the flange compresses and draws the established part tight on the bushing.
Why Choose Our QD Bushed Pulley?

QD Bushed Pulleys offer numerous advantages over traditional V-Belt pulleys. They are more cost-effective and are well-suited for use with non-critical ratio drives. They feature a radially shaped cylindrical lining that reduces friction inside the hole and constricts the motion of mechanical parts. They work well in conjunction with hubs found in sprockets.

Technological Processing

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. By 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.
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.

Reviews (0)

Reviews

There are no reviews yet.

Be the first to review “4B QD Bushed Sheaves Pulleys for “A” and “B” Belts”

Your email address will not be published. Required fields are marked *

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