Adjustable Speed V Belt Pulleys
Adjust your machinery to the strictest of standards with adjustable speed v belt pulleys from us. Our adjustable speed v belt pulleys support applications with drive-speed refinements, including pumps, fans, blowers, and more. Stop worrying about adjustment frustrations because an adjustable speed v belt pulley from our stock is easy to work with in any application. Slip the variable drive pulley onto your machine, and adjust it from that point forward. Speed adjustments are part of the pulley’s design benefits. The secret is within the threaded, angular-faced discs that are the core of the V-shaped groove on each pulley. If you need more speed, move the discs toward each other.
This alignment produces a belt that simply rides higher in the groove. Achieve a larger pitch diameter than before with this adjustment. Meet every requirement in your industry by slowing the machinery down to a specific rate. Simply increase the space between the two discs, which slows down the belt’s motion. At Power-trans tech, our adjustable speed v belt pulleys give you the necessary versatility to refine your machinery and move forward with a productive day.
Adjustable Speed V Belt Pulley Size Charts
(1) Single-Groove Adjustable Speed V-Belt Pulleys
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Size
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Type
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Outside Diameter
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F (max)
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F (min)
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G (max)
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G (min)
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(L)
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(K)
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Weight (LBS)
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|---|---|---|---|---|---|---|---|---|---|
| 1VP25 | 1 | 2.50″ | 13/16″ | 9/16″ | 5/8″ | 3/8″ | 1-1/2″ | 5/8″ | 0.7 |
| 1VP30 | 1 | 2.87″ | 13/16″ | 9/16″ | 5/8″ | 3/8″ | 1-21/32″ | 19/32″ | 1.1 |
| 1VP34 | 1 | 3.15″ | 1″ | 11/16″ | 13/16″ | 1/2″ | 1-7/8″ | 21/32″ | 1.4 |
| 1VP40 | 1 | 3.75″ | 1-1/16″ | 11/16″ | 7/8″ | 1/2″ | 1-7/8″ | 21/32″ | 1.9 |
| 1VP44 | 1 | 4.15″ | 1-1/16″ | 11/16″ | 7/8″ | 1/2″ | 1-7/8″ | 21/32″ | 2.4 |
| 1VP44 | 2 | 4.15″ | 1-1/8″ | 3/4″ | 7/8″ | 1/2″ | 2″ | 11/16″ | 2.9 |
| 1VP50 | 1 | 4.75″ | 1-1/16″ | 11/16″ | 7/8″ | 1/2″ | 1-7/8″ | 25/32″ | 2.9 |
| 1VP50 | 2 | 4.75″ | 1-1/8″ | 3/4″ | 7/8″ | 1/2″ | 1-7/8″ | 11/16″ | 3.6 |
| 1VP56 | 1 | 5.35″ | 1-1/16″ | 11/16″ | 7/8″ | 1/2″ | 1-7/8″ | 21/32″ | 3.8 |
| 1VP56 | 2 | 5.35″ | 1-1/8″ | 3/4″ | 7/8″ | 1/2″ | 1-7/8″ | 11/16″ | 4.4 |
| 1VP60 | 2 | 6.00″ | 1-1/4″ | 7/8″ | 1-1/32″ | 21/32″ | 1-21/32″ | 7/16″ | 6.5 |
| 1VP62 | 2 | 5.95″ | 1-1/8″ | 3/4″ | 7/8″ | 1/2″ | 1-29/32″ | 21/32″ | 6.1 |
| 1VP65 | 2 | 6.50″ | 1-1/4″ | 7/8″ | 1-1/32″ | 21/32″ | 1-21/32″ | 7/16″ | 6.8 |
| 1VP68 | 2 | 6.55″ | 1-1/8″ | 3/4″ | 7/8″ | 1/2″ | 1-29/32″ | 21/32″ | 7.3 |
| 1VP71 | 2 | 7.10″ | 1-1/4″ | 7/8″ | 1-1/32″ | 21/32″ | 1-21/32″ | 7/16″ | 8.2 |
| 1VP75 | 2 | 7.50″ | 1-1/4″ | 7/8″ | 1-1/32″ | 21/32″ | 1-21/32″ | 7/16″ | 9.2 |
(2) Double-Groove Adjustable Speed V-Belt Pulleys
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Size
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Type
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Outside Diameter
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F (max)
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F (min)
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G (max)
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G (min)
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(L)
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(K)
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Weight (LBS)
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|---|---|---|---|---|---|---|---|---|---|
| 2VP36 | 4 | 3.35″ | 2″ | 1-3/8″ | 13/16″ | 1/2″ | 3″ | 1-3/16″ | 3.4 |
| 2VP42 | 4 | 3.95″ | 2-1/8″ | 1-3/8″ | 7/8″ | 1/2″ | 3″ | 1-3/16″ | 4.4 |
| 2VP52 | 5 | 4.75″ | 2-1/8″ | 1-3/8″ | 7/8″ | 1/2″ | 3″ | 1-3/16″ | 6.3 |
| 2VP56 | 5 | 5.35″ | 2-1/8″ | 1-3/8″ | 7/8″ | 1/2″ | 3″ | 1-3/16″ | 7.8 |
| 2VP60 | 5 | 6.00″ | 2-3/8″ | 1-5/8″ | 1/32″ | 21/32″ | 3-1/4″ | 1-1/4″ | 10.6 |
| 2VP62 | 5 | 5.95″ | 2-1/8″ | 1-3/8″ | 7/8″ | 1/2″ | 3″ | 1-3/16″ | 10.0 |
| 2VP65 | 5 | 6.50″ | 2-3/8″ | 1-5/8″ | 1-1/32″ | 21/32″ | 3-1/4″ | 1-1/4″ | 12.3 |
| 2VP68 | 5 | 6.55″ | 2-1/8″ | 1-3/8″ | 7/8″ | 1/2″ | 3″ | 1-3/16″ | 11.7 |
| 2VP71 | 5 | 7.10″ | 2-3/8″ | 1-5/8″ | 1-1/32″ | 21/32″ | 3-1/4″ | 1-1/4″ | 14.6 |
| 2VP75 | 5 | 7.50″ | 2-3/8″ | 1-5/8″ | 1-1/32″ | 21/32″ | 3-1/4″ | 1-1/4″ | 16.5 |
Adjustable Speed V Belt Pulley Features
- Four types available
- Wide range of sizes and groove counts
- Machined from annealed cast iron
- Exclusive patented locking collars clamp all movable parts securely in place
- Accurately balanced to assure smooth operation and long life
- Eliminates freezing and sticking from fretting corrosion
- Fits standard NEMA motor specifications
- Datum diameter is adjusted by loosening set screw(s) in the hubs
- For use with standard or high-capacity V-belts
- No Lubrication required
- Won’t freeze or stick
Material Available for Adjustable Speed V Belt Pulley
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We offer our clients a quality range of adjustable speed v belt pulleys, which is highly acclaimed across the globe. Manufactured with conformation to international standards, these pulleys are easy to handle and ensure high performance. |
Adjustable Speed V Belt Pulley Application
The most common reason is for mechanical drive speed variation. A great deal of drive speed refinement is possible with the use of adjustable speed v belt pulleys and they are used on fans and blowers and industrial water and trash pump applications. Adjustable speed v belt pulleys allow for mechanical drive speed variation that is economical, easy to install, and easy to adjust. In just seconds a technician can increase or decrease drive speed.
The principle of a adjustable speed v belt pulley is that the threaded angular faced discs forming the V-shaped groove, in which the belt rides, are movable. When the discs are moved toward each other, the belt rides higher in the groove and the pitch diameter of the sheave is larger, which increases the driven speed. When the discs are moved away from each other, the belt rides lower and the pitch diameter is smaller decreasing the driven speed. In contrast, with a “fixed pitch” drive design you are limited to a specific drive speed, which is a direct result of the “fixed diameter” of the sheaves.
Drive speed variation can be extremely valuable as a system is commissioned. Adjustable speed v belt pulleys are a simple method to vary fan speed to meet the required air flow specifications, allowing the system to be compliant with all engineering and regulatory requirements.
- Using a “fixed pitch” design would require a sheave combination change out to alter the driven fan speed, which is both time consuming and more costly.
- Using a variable pitch drive design can also help reduce zone air flow without relying on inefficient dampers, which restrict the air flow.
- Using adjustable speed v belt pulleys allow the motor and fan to operate at optimum speed characteristics.
Installation and Removal of V Belt Pulleys
Install
1. Check the pulley groove to make sure there are no scratches or sharp edges and all dimensions are up to standard;
2. Clean the surfaces of all parts, such as hub holes, taper sleeves, bolt holes, etc. Fit the cone sleeve into the pulley, aligning all the screw holes.
3. Apply oil to the screw (TB 1008-TB 3030) and thread (TB 3525-TB 5050) and screw them into the mounting holes, but do not tighten them yet.
4. Clean the surface of the drive shaft, push the pulley with the tapered sleeve installed to the predetermined position on the shaft, and check whether the V-belt pulley is aligned.
5. When using the keyway, it must be inserted into the hub first, and there must be a certain tolerance between the keyway and the hole hub.
6. Using a hexagonal wrench conforming to the DIN911 standard, alternately, gradually, and evenly tighten the bolts in each mounting hole until the torque shown in the table below is reached.
7. After a short period of operation (0.5 to 1 hour), check the tightening torque of the bolts and retighten them if necessary.
8. To prevent the intrusion of foreign matter, fill the hole’s connection hole with grease.
Disassemble
1. Loosen all the bolts, take out one or two of the bolts according to the number of disassembly holes, lubricate the bolt pattern and the tip of the bolt with oil, and insert the bolt into the disassembly hole.
2. Tighten the bolts alternately until the taper sleeve and pulley are loosened.
3. Remove the taper sleeve and pulley from the shaft.
V Belt Pulley Technological Processing
Adjustable Speed V Belt Pulley Manufacturer
We are a professional manufacturer of lots of pulleys, such as V belt pulleys, timing belt pulleys, Pilot bore, taper bore Pulleys(SPA, SPB, SPC, AND SPZ), adjustable pulleys, and multi-wedge pulleys.
Also, we have a taper lock bush to match the pulley, TB bushing, and QD bushing!
| European standard: | American standards: | Features: |
| a) V-belts pulley for taper bushing: SPZ, SPA, SPB, SPC; up to 15 grooves. b) Adjustable speed V-belt pulleys and variable speed pulleys c) Flat belt pulleys and conveyor belt pulleys. |
a) Sheave for taper bushing: 3V, 5V, 8V
b) Sheaves for QD bushings: 3V, 5V, 8V |
1. Made according to drawings and/or samples, OEM inquiries are welcomed, especially for the big pulleys. 2. Material: 45C, cast iron, ductile iron, GG25, GGG40, nylon, aluminum, etc. 3 Surface treatment: Black oxide, phosphate, painted, Zinc plate, or passivated. 4 Bore: pilot bore, finish bore, taper bore, bore for QD bushing 5. Inspection: Dynamic balance & Static balance tests are available.With standardized design and well-equipped CNC machining systems. 6. Our pulleys have high Precision and good interchangeability. 7. Apply to mining machinery, petroleum machinery, etc. |
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V Belt Pulley 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.
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V Belt Pulley Packaging & Shipping
Experienced Workers Packing Pulleys Carefully, safe wooden cases keep parts from being injured or damaged during the sea or air shipment.
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