
Ultra-wide power range 0.12kW–250kW
The full product line covers micro light-load drives of 0.12kW up to 250kW ultra-heavy-duty working conditions. It is compatible with small packaging conveyors, medium assembly lines, mining mixers and heavy lifting machines, satisfying transmission demands across all automation industries.
Precisely adjustable reduction ratio range 3.77~281.71
Multi-stage parallel helical gear structure provides full gradient ratios starting from small ratio 3.77 up to ultra-high ratio 281.71. One single series fits high-speed direct drive, medium-speed transmission and low-speed high-torque output applications.
Integrated hollow output shaft with parallel shaft layout
Input and output shafts are arranged in parallel. The one-piece hollow output shaft allows direct penetration of load drive shafts. Both flat key and shrink disc locking methods are available, removing the need for extra coupling adapters.

High transmission efficiency with remarkable long-term energy saving
Continuous curved meshing of helical gears delivers comprehensive efficiency of 92%~96%, greatly cutting energy loss compared with worm gearboxes. It effectively reduces electricity expenses for 250kW heavy-duty equipment running continuously.
Compact overall machine size via direct hollow shaft mounting
Slim parallel shaft body combined with sleeve-type hollow mounting saves space occupied by flanges and couplings. The assembly structure becomes much more compact, greatly shrinking overall dimensions of roller conveyors, winding and roller bed machinery.
Heavy load & strong shock resistance for harsh working conditions
Helical gears bear even force during meshing with high tooth root bending strength. The 250kW high-power models withstand continuous heavy loads and frequent forward-reverse shocks with slow gear abrasion and low failure rate, suitable for dusty, high-temperature severe industrial environments.








| Hollow Shaft Helical Gearbox |


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Q:Is the hollow helical gearbox with small ratio 3.77 suitable for direct connection with high-speed motors?
A: Yes, it matches 2-pole 3000rpm high-speed motors perfectly. The helical gear design performs well in noise and heat control at high speeds, stable operation is guaranteed as long as lubricant is replaced regularly.
Q: Is extra cooling equipment required for the 250kW high-power parallel hollow shaft model?
A: The built-in housing heat dissipation structure meets continuous operation under standard ambient temperature; cooling fans or circulating oil cooling accessories are recommended for high-temperature environments and 24-hour non-stop full-load operation.
Q:Does the hollow shaft support both flat key and shrink disc fixing methods?
A: Internal keyway is standard for all models; shrink disc locking can be equipped for heavy loads and frequent forward-reverse rotation to prevent drive shaft slipping.
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