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West side of National Highway 106, Shimengqiao Town, Renqiu City, Hebei Province
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African Series Sprocket BAJAJ BM-100-42T
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- Product Description
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Product Introduction
Materials
- Small sprocket (drive): 1045, 1023, 20CrMnTi, 20Cr (carburized and quenched, HRC 45–60)
- Large driven sprocket: 45# steel, Q235 (quenched and tempered, HRC 28–32; or fully quenched, HRC 45–55)
Our company’s manufacturing processes are mainly divided into two types: stamping and forging.
I. Stamping
- Blanking: Roll forming/steel plate shearing and blanking
- Precision punching/blanking of gear teeth: precision die + press, producing tooth profile, center hole, and weight-reduction holes in a single stroke.
- Leveling: Ensure flatness
- Deburring and chamfering
- Heat Treatment: Through-hardening/Quenching and Tempering (large gears), Carburizing and Quenching (small gears)
- Surface Strengthening: Shot Peening (to Enhance Fatigue Strength), Phosphating/Black Oxide Coating/Paint Baking
- Inspection: tooth profile, hardness, and concentricity (≤0.05 mm)
II. Forging + Machining (High Precision, High Strength, High-End/Heavy-Load Applications)
- Cutting: Cutting round steel bars
- Forging: Heating (1000–1200°C) → Upsetting → Die Forging → Punching → Normalizing (Stress Relief)
- Rough machining: turning end faces, external cylinders, and internal holes.
- Gear tooth machining: hobbing/shaving (accuracy IT6–7)
- Finishing: Precision turning, reaming, and keyway milling
- Heat Treatment: Local Tooth Surface Quenching and Tempering (HRC 45–62)
- Post-processing: gear grinding, shot peening, and rust prevention
- Inspection: tooth pitch, runout, hardness,
III. Key Points for Critical Processes
- Gear tooth accuracy: hobbing > shaping > stamping; stamping can achieve Ra 1.6, while hobbing can achieve Ra 0.8.
- Heat Treatment: Small sprocket—carburizing and quenching (hard surface, tough core); large sprocket—normalizing and tempering followed by tooth-surface quenching.
- Surface Strengthening: Shot Peening (grain refinement, fatigue resistance); PVD Coating (TiN, service life ×3–5)
- Quality Control: Pitch cumulative error ≤ 0.03 mm; Hardness HRC 56–62; Concentricity ≤ 0.05 mm
IV. Process Comparison
- Stamping: low cost, high efficiency; suitable for small to medium batch production and general-purpose vehicle models.
- Forging: high strength, high precision; suitable for heavy-duty, high-end, and custom applications.
Bajaj BM100 sprocket is designed to support reliable power transmission and smooth chain operation for compatible motorcycles. Built for durability and consistent performance, it helps transfer engine power to the rear wheel while supporting efficient riding. Choosing a properly fitted Bajaj BM100 sprocket can help reduce uneven chain wear and maintain dependable drivetrain operation. Before purchasing, confirm the tooth count, dimensions, mounting specifications, and compatibility with your motorcycle model. Suitable for replacement and routine maintenance, this sprocket is a practical choice for motorcycle parts distributors, repair shops, and riders seeking dependable components. Select quality parts to support long-lasting performance and a smoother riding experience
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Address
West side of National Highway 106, Shimengqiao Town, Renqiu City, Hebei Province