3TB 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 P1 taper bushings or Q1 taper bushings, which we also stock. Most of our 3TB 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.
3TB 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3TB34 | P2 | 3.0″ | 3.75″ | 3.75″ | 3 | 3-13/16″ | 2-15/16″ | 1-1/16″ | 7/8″ | 3″ | 2-1/2″ | 5/8″ | 2-5/16″ | 1/4″ | 3.8 |
| 3TB36 | P2 | 3.2″ | 3.95″ | 3.95″ | 3 | 3-13/16″ | 2-15/16″ | 1-1/16″ | 7/8″ | 3″ | 2-1/2″ | 5/8″ | 2-5/16″ | 1/4″ | 4.4 |
| 3TB38 | P1 | 3.4″ | 4.15″ | 4.15″ | 5 | 3-5/8″ | 1-15/16″ | 5/8″ | 7/16″ | 3″ | 2-1/2″ | — | 1-5/16″ | 1/4″ | 3.8 |
| 3TB40 | P1 | 3.6″ | 4.35″ | 4.35″ | 5 | 3-5/8″ | 1-15/16″ | 5/8″ | 7/16″ | 3″ | 2-1/2″ | — | 1-5/16″ | 1/4″ | 4.5 |
| 3TB42 | P1 | 3.8″ | 4.55″ | 4.55″ | 5 | 3-5/8″ | 1-15/16″ | 5/8″ | 7/16″ | 3″ | 2-1/2″ | — | 1-5/16″ | 1/4″ | 4.9 |
| 3TB44 | P1 | 4.0″ | 4.75″ | 4.75″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 5.1 |
| 3TB46 | P1 | 4.2″ | 4.95″ | 4.95″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 6.0 |
| 3TB48 | P1 | 4.4″ | 5.15″ | 5.15″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 6.3 |
| 3TB50 | P1 | 4.6″ | 5.35″ | 5.35″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 6.9 |
| 3TB52 | P1 | 4.8″ | 5.55″ | 5.55″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 7.5 |
| 3TB54 | P1 | 5.0″ | 5.75″ | 5.75″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 8.3 |
| 3TB56 | P1 | 5.2″ | 5.95″ | 5.95″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.0 |
| 3TB58 | P1 | 5.4″ | 6.15″ | 6.15″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.6 |
| 3TB60 | P1 | 5.6″ | 6.35″ | 6.35″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 10.5 |
| 3TB62 | P1 | 5.8″ | 6.55″ | 6.55″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.4 |
| 3TB64 | P1 | 6.0″ | 6.75″ | 6.75″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 9.5 |
| 3TB66 | P1 | 6.2″ | 6.95″ | 6.95″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 10.0 |
| 3TB68 | P1 | 6.4″ | 7.15″ | 7.15″ | 13 | 2-3/4″ | 1-15/16″ | 3/16″ | 0 | 3″ | 2-1/2″ | 5/8″ | 1-5/16″ | 1/4″ | 10.4 |
| 3TB70 | Q1 | 6.6″ | 7.35″ | 7.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 13.0 |
| 3TB74 | Q1 | 7.0″ | 7.75″ | 7.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 13.3 |
| 3TB80 | Q1 | 7.6″ | 8.35″ | 8.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 15.3 |
| 3TB86 | Q1 | 8.2″ | 8.95″ | 8.95″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 18.9 |
| 3TB90 | Q1 | 8.6″ | 9.35″ | 9.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 18.1 |
| 3TB94 | Q1 | 9.0″ | 9.75″ | 9.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 18.0 |
| 3TB110 | Q1 | 10.6″ | 11.35″ | 11.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 21.3 |
| 3TB124 | Q1 | 12.0″ | 12.75″ | 12.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 25.4 |
| 3TB136 | Q1 | 13.2″ | 13.95″ | 13.95″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 27.4 |
| 3TB154 | Q1 | 15.0″ | 15.75″ | 15.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 29.8 |
| 3TB160 | Q1 | 15.6″ | 16.35″ | 16.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 32.0 |
| 3TB184 | Q1 | 18.0″ | 18.75″ | 18.75″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 37.8 |
| 3TB200 | Q1 | 19.5″ | 20.35″ | 20.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 49.9 |
| 3TB250 | Q1 | 24.5″ | 25.35″ | 25.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 61.0 |
| 3TB300 | Q1 | 29.5″ | 30.35″ | 30.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 78.5 |
| 3TB380 | Q1 | 37.5″ | 38.35″ | 38.35″ | 13 | 3-5/32″ | 2-1/2″ | 3/4″ | 3/8″ | 4-1/8″ | 2-1/2″ | 3/4″ | 1-3/4″ | 9/32″ | 110.0 |
Features and Benefits
I. The belt is an elastomer that can mitigate load impact and run smoothly without noise
II. Overload will cause the belt to slip on the wheel, thus playing the role of protecting the whole machine
Ⅲ. The grooves of most American standard pulleys are suitable for several different belt types, and the belt design and application are relatively flexible.
Ⅳ. There are many types of American standard pulley grooves and taper bushings. Some pulleys and bushings are allowed to be installed on the front and back, which has become a solution for harsh conditions on different occasions.
V. American standard pulleys and taper bushings can achieve precise balance control and perform well in transmission.
Applications of 3TB Series Pulley
3TB series pulleys are widely used in the power output of small diesel engines, agricultural vehicles, tractors, automobiles, mining machinery, machining equipment, textile machinery, packaging machinery, lathes, forging machines, some small horsepower motorcycle power transmission, agricultural machinery power transmission, Air compressor, reducer, reducer, generator, etc.
Technological Processing
Company Profile
HZPT 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.
Additional information
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