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Finished Bore Sprockets are high-performance mechanical components designed for seamless integration into power transmission systems. Engineered with precision-machined bores and hardened teeth, these sprockets ensure reliable engagement with roller chains, delivering optimal torque transfer in demanding industrial applications. Available in a wide range of sizes, tooth configurations, and bore diameters, they cater to diverse operational requirements across industries.
Finished Bore Sprockets Detail
| Product Name | Finished Bore Sprockets |
| Product Material | Carbon Steel/Stainless Steel/Alloy Steel |
| Product Process | Forging/casting/hot forging/precision casting/high frequency quenching |
| Surface Treatment | Anti-rust treatment/high performance coating |
| Customizable Products | Gears / Sprockets / Worms / Shafts / Rack Bars / Bevel Gears, etc. |
Key Advantages & Features
Precision Machining:
tight tolerances (ISO H7/H8)
Durable Construction:
Made from premium materials
Versatile Compatibility:
Meet unique shaft requirements
Efficient Installation:
Dual locking mechanism
Product Information Parameters
In addition to standard sizes,GRANGIN also focuses on custom parts. It has an absolute advantage in the field of custom parts,
Meet almost all application requirements and the most stringent specifications.
| Model | Length (cm) | Width (cm) | Height (cm) | Volume (cm3) | Weight(g) |
| Pitch 31.75*6 tooth inner diameter 25 | 1 | 1 | 1 | 1 | 1 |
| Pitch 31.75*7 tooth inner diameter 25/28/30 | 1 | 1 | 1 | 1 | 1 |
| Pitch 38.1*7 tooth inner diameter 28 | 1 | 1 | 1 | 1 | 1 |
| Pitch 50.8*6 tooth inner diameter 38 | 1 | 1 | 1 | 1 | 1 |
| Pitch 50.8*6 tooth inner diameter 47 bearing | 1 | 1 | 1 | 1 | 1 |
| Pitch 63.5*6 tooth inner diameter 38 | 1 | 1 | 1 | 1 | 1 |
| 10A24 tooth inner diameter 22/25/30 protector | 1 | 1 | 1 | 1 | 1 |
Specialized in designing, producing and processing various specifications of synchronous wheels, gears, sprockets, racks,
couplings and other transmission accessories
Semi-Finished Parts Pictures:
Packaging Pictures：
Our Certificate
CE
ISO45001
ISO14001
ISO9001
Spur Gears
Bevel Gears
Helical Gears
Worm and Worm Gears
Synchronous Pulley
Timing Pulley
Flexible Coupling
Rigid Couplings
Involute Splines
Straight Sided Splines
Ball Screw
T-type Lead Screw
Yes. While ANSI B29.1 sprockets typically follow standard bore sizes (e.g., 1" to 6"), manufacturers can customize bores to non-standard diameters (e.g., 65mm) or unique keyway profiles (e.g., square keys, splined shafts). Specify your shaft dimensions (diameter, keyway width/depth) and tolerance requirements (e.g., H7/h6 fit). For oversized bores, bushings or adapters may be recommended.
What material options are available for heavy-duty applications, and how do they impact performance?
Carbon Steel (1045/4140): Default choice for general use; heat-treated to 45–55 HRC for wear resistance.
Stainless Steel (316): Ideal for corrosive environments (e.g., food processing, marine); lower hardness (30–35 HRC) but meets USDA/FDA standards.
Alloy Steel (4340): Quenched & tempered for extreme loads (e.g., mining equipment); tensile strength up to 1,500 MPa.
Cast Iron (Grade 40): Cost-effective for low-speed, high-torque systems (avoid impact loads).
Trade-offs: Stainless steel costs 3–5× more than carbon steel but eliminates rust; alloy steel offers higher strength but requires longer lead times.
Can sprocket teeth be modified for specific chain types or noise reduction?
Absolutely. Customizations include:
Tooth Profile: Adjust tooth shape (e.g., hook-free design) to match non-standard chains (e.g., double-pitch chains).
Chamfered Teeth: Reduce chain engagement noise in quiet environments (e.g., packaging lines).
Hardened Teeth: Induction-hardened teeth (55–60 HRC) for abrasive applications (e.g., gravel conveyors).
Provide chain specifications (pitch, roller diameter) and operating conditions (speed, load) for tailored solutions.
https://www.ggn-gear.com/