Industrial Sprockets by Hub Type: Type A, Type B, and Type C
Donghua manufactures a complete range of high-quality industrial sprockets in all standard ANSI hub configurations. Whether you need a simple Type A plate sprocket, the versatile single-hub Type B, or the heavy-duty double-hub Type C, we have the solution. As a leading global manufacturer of power transmission components since 1991, our sprockets are engineered for durability, precision, and long service life in demanding industrial environments.
Understanding Industrial Sprocket Hub Types: A, B, and C
| Hub Type | Description | Typical Applications & Advantages |
|---|---|---|
| Type A (Plate Sprocket) | A flat sprocket with no hub extension on either side. It is simply a toothed plate. | Ideal for use as idler sprockets, in confined spaces, or when the sprocket needs to be mounted flush against a machine surface or flange. |
| Type B (Single Hub) | Features a hub extended on one side of the plate. This is the most common industrial sprocket type. | Provides enhanced shaft support compared to Type A. The standard choice for end-of-shaft mounting in conveyors, gearboxes, and general power transmission applications. Offers a strong keyway and set screw engagement. |
| Type C (Double Hub) | Has hubs of equal thickness on both sides of the plate. | Offers maximum shaft support and balanced load distribution. Ideal for larger sprockets, heavy-duty drives, or when the sprocket is mounted in the middle of a shaft. |
Our Industrial Sprocket Specifications & Range
| Specification | Available Options from Donghua |
|---|---|
| Standards | ANSI (B29.1), ISO, DIN, JIS |
| Model/Size Range | 25A to 360A, 25B to 360B, and corresponding C types (e.g., 25C to 360C) |
| Materials | C45 carbon steel, Stainless steel (304, etc.), and more on request |
| Heat Treatment | Hardening and Tempering, Teeth Hardening (Induction hardening) |
| Advantages | High wear resistance, long working life, better resistance to shock loads |
| Surface Finish | Finish machined, black oxide, zinc-plated, etc. |
| Chain Strands | Available for Simplex, Duplex, and Triplex roller chains |
| Bore Options | Pre-bored (pilot bore), finished bore, taper bore, custom bore with keyway |
| Special Types | Welding sprockets, Double Single sprockets, Double Pitch sprockets, Idler sprockets, Stainless steel sprockets, Plastic sprockets |
| Manipulation Way | Forced Manipulation |
| Payment Terms | L/C, T/T, D/P |
At Donghua, our industrial sprockets are manufactured with the same commitment to quality as our world-famous chains. We use premium carbon and alloy steels, and apply advanced heat treatment processes to achieve optimum hardness for both core strength and tooth wear resistance. Our machining capabilities, including CNC turning and gear hobbing, ensure precise tooth profiles, accurate pitch control, and a superior finish for smooth and quiet operation. Every sprocket is inspected to ensure it meets our rigorous standards before shipment.
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