Product Description Features
Original modular design, biomimetic surface with owned intellectual property right.
Adopt German worm hob to process the worm wheel.
Low friction, long lifecycle, high efficiency.
Diverse drives, motor or other power drive, also can be driven by hand.
Various output type. Main applied for
Hoist and transport
Building and construction
Forest and paper
Metal processing
Agriculture and food

Housing material	Cast iron/Ductile iron
Housing hardness	HBS190-240
Gear material	20CrMnTi alloy steel
Surface hardness of gears	HRC58°~62 °
Gear core hardness	HRC33~40
Input / Output shaft material	42CrMo alloy steel
Input / Output shaft hardness	HRC25~30
Machining precision of gears	accurate grinding, 6~5 Grade
Lubricating oil	GB L-CKC220-460, Shell Omala220-460
Heat treatment	tempering, cementiting, quenching, etc.
Efficiency	98%
Noise (MAX)	60~68dB
Temp. rise (MAX)	40°C
Temp. rise (Oil)(MAX)	50°C
Vibration	≤20µm
Backlash	≤20Arcmin
Brand of bearings	China top brand bearing, HRB/LYC/ZWZ/C&U. Or other brands requested, SKF, FAG, INA, NSK.
Brand of oil seal	NAK --- Taiwan or other brands requested

  Q: Are you trading company or manufacturer ?
A: We are factory. Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock. Q: Can we buy 1 pc of each item for quality testing?
A: Yes, we are glad to accept trial order for quality testing. Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shippment.
If you have other question, freely to contact us,please.

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Product Categories : JWM/SWL series worm screw jack