| Customization: | Available |
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| Certification: | CE, ISO |
| Pulley Sizes: | Spz SPA Spb Spc |
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I. Advantages of V-Belt Pulleys with Solid Hub
A solid hub refers to the hub portion (the core part that interfaces with the shaft and transmits torque) being a complete, hole-free, non-hollowed-out solid structure. Compared to hubs with ribs, spokes, or openings, it offers the following significant advantages:
Exceptional Strength and Rigidity:
The solid structure provides the maximum cross-sectional area, enabling it to withstand higher torque, radial loads, and axial loads.
Under heavy-duty, impact loading, or in applications requiring high-precision transmission, it is less prone to deformation, bending, or fracture, ensuring transmission reliability and stability.
High rigidity helps reduce vibration during high-speed rotation.
Higher Load Capacity:
Benefiting from its strength and rigidity, pulleys designed with a solid hub can accommodate higher-power drive systems and are suitable for applications requiring the transmission of greater power.
Superior Durability and Service Life:
Eliminates risk points (relatively fewer stress concentration points) like spoke breakage or hub cracking.
Thicker material better resists wear and corrosion (especially when combined with surface treatments).
Under harsh operating conditions (e.g., high dust, humidity, chemical environments), the solid structure is less prone to accumulating dirt or internal corrosion, resulting in relatively lower maintenance requirements.
Good Heat Dissipation (Compared to Some Spoked Designs):
Although the solid structure itself conducts heat less effectively than spoked designs which benefit from significant air convection, its greater mass and thermal mass allow it to absorb more heat and dissipate it conductively through contact with the shaft and bearing housing. Under sustained high-load operation, it can sometimes be less prone to failure due to heat buildup than thin-spoked hubs (provided the overall thermal design is sound).
Higher Precision and Stability:
The solid structure makes it easier to ensure the roundness, cylindricity of the hub bore, and its concentricity with the groove section during manufacturing.
During high-speed operation, dynamic balancing performance is typically better, vibration is reduced, helping to extend the life of bearings and drive belts.
Simpler Design and Manufacture (In Some Aspects):
The relatively simple structure may make casting or machining processes easier than manufacturing complex spokes (especially for large hubs).
| Description | P | O | Grooves | N | L | D | S | B | Type | d |
| SPA132 | 132 | 137.5 | 1 2 3 4 5 |
60 60 |
40 45 52 52 |
97 97 |
20 35 50 65 80 |
1 1 1 2 2 |
15 15 15 15 15 |
|
| SPA140 | 140 | 145.5 | 1 2 3 4 5 |
60 60 65 |
40 45 52 52 52 |
107 107 107 107 107 |
10 10 12 |
20 35 50 65 80 |
3 3 3 2 2 |
15 15 15 20 20 |
| SPA150 | 150 | 155.5 | 1 2 3 4 5 |
60 60 65 |
40 45 52 52 52 |
117 117 117 117 117 |
10 10 12 |
20 35 50 65 80 |
3 3 3 2 2 |
15 15 20 20 20 |
| SPA160 | 160 | 165.5 | 1 2 3 4 5 |
60 60 70 70 80 |
40 45 52 52 52 |
127 127 127 127 127 |
10 10 12 18 18 |
20 35 50 65 80 |
3 3 3 4 4 |
15 15 20 20 20 |
| SPA170 | 170 | 175.5 | 1 2 3 4 5 |
60 60 70 80 80 |
40 45 52 52 52 |
137 137 137 137 137 |
12 12 12 18 18 |
20 35 50 65 80 |
3 3 3 4 4 |
15 15 20 20 20 |
| SPA180 | 180 | 185.5 | 1 2 3 4 5 |
65 70 70 80 80 |
40 50 52 60 65 |
147 147 147 147 147 |
12 12 12 18 18 |
20 35 50 65 80 |
3 3 3 4 4 |
20 20 20 20 20 |
| SPA200 | 200 | 205.5 | 1 2 3 4 5 |
65 70 70 80 80 |
45 50 52 60 65 |
167 167 167 167 167 |
12 12 12 18 18 |
20 35 50 65 80 |
3 3 3 4 4 |
20 20 20 20 20 |
| SPA224 | 224 | 229.5 | 1 2 3 4 5 |
65 70 80 90 90 |
45 50 52 60 65 |
192 192 192 192 192 |
12 12 12 18 18 |
20 35 50 65 80 |
3 3 3 4 4 |
20 20 20 20 20 |
| SPA250 | 250 | 255.5 | 1 2 3 4 5 |
75 75 80 90 90 |
50 50 60 65 65 |
217 217 217 217 217 |
12 12 12 18 18 |
20 35 50 65 80 |
3 3 3 5 4 |
20 20 20 20 20 |
| SPA280 | 280 | 285.5 | 1 2 3 4 5 |
75 80 80 90 100 |
50 50 60 65 65 |
247 247 247 247 247 |
14 14 14 14 14 |
20 35 50 65 80 |
5 5 5 5 6 |
20 20 20 20 25 |
| Model NO. | SPA | Manufacturing Process | Casting |
| Specifications | European or American Standard or Customized | Transport Package | Plastic Bag, Carton Box. |
| Trademark | SMCC, clients brand or No mark | Material | Iron |
| Surface Treatment | Oxygenation,Phosphating Blacken | Origin | China Mainland |
| Application | Chemical Industry, Grain Transport, Mining Transport, Power Plant, Engineering Hydraulic Cylinder, Forging Machine | HS Code | 8431390000 |
| Process | CNC Machining | Production Capacity | 100000 PCS/Months |
The company is located in the beautiful coastal city of Qingdao. We are a large enterprise group that integrates R&D, manufacturing, marketing, market and technical services. We have three major research and production bases as well as a large marketing center. Our products cover transmission components, bearings, chains, sprockets, tractor drive axles and hydraulic steering devices. 219 sets of advanced automated production equipment ensure the quality of our products. We can design and develop products that meet the specific needs of customers, and also provide OEM customization services.
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