Hangzhou Unibear Industrial Co. Ltd|Hangzhou Unibear Holding Group Co. Ltd-Transmission Chain

Single-side Cotter Pin Roller Chain
- High-precision assembling machine, no warp occurred in chain framework, operation noise lower than 50 decibels.
- Imported Taiwan punching machine and multistage progressive die, burnishing band of plate reaching over 90%, ensuring extrusion force.
- Ultimate tensile pre-stretching under dual-hydrocylinders, decreasing chain elongation by 30%.
- Wide-waist plate and steel-ball hole burnishing, remarkably improving chain’s anti-fatigue performance, reaching international standard of over 5 million times of fracture limit regarding fatigue resistance under high-frequency loading.
- Plate shot-peening treatment, refining inner microstructure, increasing tensile strength by 15%, which surpasses domestic competitors by 10%.
- Germany-imported environment-friendly super wear-resistant grease, whose adhesive thickness over 0.2mm, greatly improving wear-resistance performance.
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规格参数表
Double-pitch Transmission Roller Chain
- With lighter weight per average length, suitable for providing driving force for equipments with longer distance between shafts.
- Specialized automatic precision assembly machine, no warp occurred in chain framework, effectively ensuring the sideseam of chain.
- Plate shot-peening treatment, refining inner microstructure, remarkably increasing chain’s tensile strength.
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规格参数表
Heavy-duty Series Roller Chain
- Fine quality material 40CrNiMo for pin, with shot-peening treatment, increasing tensile strength by 30%, standing to bear long-lasting heavy-load operation work.
- Wider waist design for inner and outer plate, effectively improving chain’s fatigue resistance.
- With ball drift treatment on clinker, improving the burnishing band of the plate hole, greatly increasing chain’s anti-fatigue performance.
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规格参数表
Self-lubrication Roller Chain
- High-precision assembling machine, no warp occurred in chain framework, operation noise lower than 50 decibels.
- Imported Taiwan punching machine and multistage progressive die, burnishing band of plate reaching over 90%, ensuring extrusion force.
- Ultimate tensile pre-stretching under dual-hydrocylinders, decreasing chain elongation by 30%.
- Wide-waist plate and steel-ball hole burnishing, remarkably improving chain’s anti-fatigue performance, reaching international standard of over 5 million times of fracture limit regarding fatigue resistance under high-frequency loading.
- Plate shot-peening treatment, refining inner microstructure, increasing tensile strength by 15%, which surpasses domestic competitors by 10%.
- Germany-imported environment-friendly super wear-resistant grease, whose adhesive thickness over 0.2mm, greatly improving wear-resistance performance.
- SMF5040 powder metallurgy bush, free of lubricating, capable of self-lubrication.
- Corrosion-resistant, maintenance-free, long service life, suitable for occasions required of wear-resistance and inconvenient for timely maintenance
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规格参数表

Single-side Cotter Pin Roller Chain

Double-pitch Transmission Roller Chain

Heavy-duty Series Roller Chain

Self-lubrication Roller Chain