2B Gripbelt Sheaves (2-Groove Cast Iron Split Taper Pulleys)
2BKH series pulleys are manufactured for A, 4L, B, 5L, AX, BX, AA, BB, and banded belts. 2BKH series pulleys are made to use H-series bushings and are commonly known as double AKH bushed pulleys and range in diameter from 3.35″ to 18.75,” but custom ones are also available upon request. 2BKH series pulleys are typically used in medium to heavy-duty agricultural and industrial applications. Our double v-belt pulleys are manufactured using state-of-the-art techniques combined with premium high-performance and high-strength features like using grade 35 cast iron instead of grade 25.
2B Gripbelt Sheaves (2-Groove Cast Iron Split Taper Pulleys)
Our 2B series two-groove Gripbelt sheaves are engineered for dual-belt power transmission applications, delivering reliable efficiency and smooth torque transfer. Designed for versatility, these dual-groove pulleys accommodate classical A, AX, AA, 4L and B, BX, BB, 5L V-belts, with outside diameters ranging from 5.75″ to 38.35″. Precision-machined to work with industry-standard Q1 or R1 split taper bushings, they ensure concentric alignment and quick mounting onto drive shafts.
Key Features & Engineering Advantages
- High-Strength Grade 35 Cast Iron: Cast from heavy-duty close-grain gray iron to ensure minimum wear, maximum tensile strength, and exceptional durability under load.
- Combination Groove Design: Dual B-section grooves accept both A and B classical profile V-belts, providing operating flexibility across a wide range of horsepower requirements.
- Phosphate Coated & Painted: Treated with a protective phosphate conversion coating and anti-corrosion paint for enhanced resistance against rust and environmental wear.
- Factory Dynamic Balancing: Dynamically balanced at the factory prior to shipment to ensure smooth, vibration-free operation and extend bearing life.
- Q1 & R1 Bushing Compatibility: Designed for split taper bushings, offering high clamping force and easy replacement without altering the motor shaft setup.
2B Style Pulley Size Chart
| Size | Bushing Type | Pitch Diameter (4L/A) | Pitch Diameter (5L/B) | Outside Diameter | Type | (O.L.) | (L) | (P) | (C) | (H) | (F) | (G) | (X) | (E) | Pulley Weight (LBS) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2B54Q | Q1 | 5.0″ | 5.4″ | 5.75″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 6.0 |
| 2B56Q | Q1 | 5.2″ | 5.6″ | 5.95″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 7.3 |
| 2B58Q | Q1 | 5.4″ | 5.8″ | 6.15″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 7.9 |
| 2B60Q | Q1 | 5.6″ | 6.0″ | 6.35″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 8.9 |
| 2B62Q | Q1 | 5.8″ | 6.2″ | 6.55″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 9.4 |
| 2B64Q | Q1 | 6.0″ | 6.4″ | 6.75″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 10.1 |
| 2B66Q | Q1 | 6.2″ | 6.6″ | 6.95″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 11.1 |
| 2B68Q | Q1 | 6.4″ | 6.8″ | 7.15″ | 5 | 2-25/32″ | 2-1/2″ | 3/4″ | 0 | 4-1/8″ | 1-3/4″ | — | 1-3/4″ | 9/32″ | 12.3 |
| 2B154R | R1 | 15.0″ | 15.4″ | 15.75″ | 16 | 3-5/32″ | 2-7/8″ | 1″ | 1/8″ | 5-3/8″ | 1-3/4″ | 7/8″ | 2″ | 9/32″ | 30.6 |
| 2B160R | R1 | 15.6″ | 16.0″ | 16.35″ | 16 | 3-5/32″ | 2-7/8″ | 1″ | 1/8″ | 5-3/8″ | 1-3/4″ | 7/8″ | 2″ | 9/32″ | 32.0 |
| 2B184R | R1 | 18.0″ | 18.4″ | 18.75″ | 16 | 3-5/32″ | 2-7/8″ | 1″ | 1/8″ | 5-3/8″ | 1-3/4″ | 7/8″ | 2″ | 9/32″ | 39.1 |
| 2B200R | R1 | 19.5″ | 20.0″ | 20.35″ | 16 | 3-5/32″ | 2-7/8″ | 1″ | 1/8″ | 5-3/8″ | 1-3/4″ | 7/8″ | 2″ | 9/32″ | 43.5 |
| 2B250R | R1 | 24.5″ | 25.0″ | 25.35″ | 16 | 3-5/32″ | 2-7/8″ | 1″ | 1/8″ | 5-3/8″ | 1-3/4″ | 7/8″ | 2″ | 9/32″ | 58.0 |
| 2B300R | R1 | 29.5″ | 30.0″ | 30.35″ | 16 | 3-5/32″ | 2-7/8″ | 1″ | 1/8″ | 5-3/8″ | 1-3/4″ | 7/8″ | 2″ | 9/32″ | 81.0 |
| 2B380R | R1 | 37.5″ | 38.0″ | 38.35″ | 16 | 3-5/32″ | 2-7/8″ | 1″ | 1/8″ | 5-3/8″ | 1-3/4″ | 7/8″ | 2″ | 9/32″ | 92.0 |
Technological Processing & Factory Stock
Supported by our 5,000-square-meter facility and high-precision CNC machining equipment, we maintain extensive stock for standard models and accommodate custom manufacturing according to technical drawings. All products undergo strict 100% pre-shipment quality inspection to ensure full adherence to ISO9001 standards.
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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
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