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

Sharp Top Chain
- Additional teeth adjustment after plate punching, effectively well shaping teeth contour.
- Heat treatment by automatic mesh belt conveyor furnace for plate, ensuring stable technique and performance.
- Plate shot-peening treatment, intensifying surface hardness, remarkably improving chain’s anti-fatigue performance.
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Coating Chain
- Gas-shield automatic welding, no loose welding or faulty soldering, prolonging chain’s service life.
- Using automatic assembling machine, ensuring stable chain framework without warp occurred.
- Mould location for welding between square shaft and plate, making high degree of symmetry of all shafts.
- Ultimate tensile pre-stretching under static pre-stretching machine, decreasing chain elongation.
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Lumber Conveyor Chain
- Fine-quality alloy-steel 40Cr for pin, greatly improving chain’s tensile strength.
- Tailor-made automatic assembly machine, ensuring stable chain framework, without warp occurred.
- 20# seamless bush, carburized layer of heat treatment reaching 0.5mm, remarkably improving chain’s wear-resistance performance.
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Wood-working Machinery Chain
- Automatic processing by digital-controlled lathe for extended pins, effectively ensuring concentricity.
- Heat treatment by automatic mesh belt conveyor furnace, ensuring stable technique and performance.
- Ultimate tensile pre-stretching under static pre-stretching machine, decreasing chain elongation.
- Plate shot-peening treatment, intensifying surface hardness, remarkably improving chain’s anti-fatigue performance.
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规格参数表
Welded Cranked Link Chain
- Twice punching technique for plate, burnishing band reaching 85%.
- Using gas-shield automatic welding, no loose welding or faulty soldering, prolonging chain’s service life.
- Milling and quadri-riveting technique for pin, preventing chain from part twirling and pin looseness under heavy-load circumstance.
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规格参数表

Sharp Top Chain

Coating Chain

Lumber Conveyor Chain

Wood-working Machinery Chain

Welded Cranked Link Chain