Hollow Shaft Worm Geared Motor
The G Series Hollow Shaft Helical-Worm Geared Motor combines high-efficiency helical gearing with precise worm gearing in a compact, right-angle (90°) transmission layout. Designed for high torque output and quiet operation, the G Series features a hollow output shaft that mounts directly onto driven machine shafts, eliminating external couplings, reducing footprint, and lowering overall installation costs.
Product Overview
The G Series Hollow Shaft Helical-Worm Geared Motor combines high-efficiency helical gearing with precise worm gearing in a compact, right-angle (90°) transmission layout. Designed for high torque output and quiet operation, the G Series features a hollow output shaft that mounts directly onto driven machine shafts, eliminating external couplings, reducing footprint, and lowering overall installation costs.
Technical Specifications
|
Parameter |
Specification |
|
Product Type |
Hollow Shaft Worm Geared Motor (GS Configuration) |
|
Transmission Type |
Right-angle, 90° (Helical gear + Worm gear) |
|
Motor Power Range |
0.12 kW – 200 kW |
|
Transmission Ratio Range |
1.26 – 33,000 |
|
Maximum Output Torque |
Up to 50 kN·m |
|
Output Shaft Connection |
Keyed hollow shaft / Optional shrink disc / Torque arm |
|
Mounting Configurations |
Foot, flange, or shaft-mounted |
|
Motor Enclosure & Insulation |
IP55 protection / Class F insulation |
|
Electrical Supply |
220V–690V, 50 / 60 Hz, 2/4/6 pole options |
Why Choose a Hollow Shaft Configuration?
Direct Shaft Mounting: Eliminates flexible couplings, alignment steps, and mounting bases, saving assembly time and structural costs.
Space-Saving Footprint: Direct 90° mounting minimizes lateral space requirements around driven machinery.
Versatile Clamping Methods: Standard keyed bore for simple setup, or shrink disc for heavy-duty zero-backlash applications.
Torque Arm Reaction Support: Integrated torque arm absorbs reaction torque, removing strain from machine structures.
Anti-Fretting Protection: Hollow bores are pre-treated with anti-fretting lubricant to prevent fretting corrosion and allow easy disassembly after long service periods.
Helical-Worm Transmission Features
The combination of a high-efficiency helical pre-stage and a high-ratio worm stage delivers balanced benefits:
High Reduction Ratios: Achieves large step-downs in a single, compact housing.
Low Noise & Smooth Running: Worm gearing provides naturally quiet operation for noise-sensitive industrial environments.
Right-Angle Layout: Optimizes spatial geometry in tight conveyor channels and plant layouts.
Interchangeability: Dimensionally interchangeable with major European standard speed reducers for drop-in replacement projects.
Applications
Conveyors & Material Handling: Belt conveyors, chain conveyors, bucket elevators, screw feeders, automated sorting lines.
Process Machinery: Industrial agitators, paddle mixers, liquid pumps, continuous batching machines.
Packaging & Automation: Palletizers, wrapping equipment, indexing tables, gantry drives.
Specialized Machinery: Mining auxiliary drives, wastewater treatment aeration systems, HVAC equipment.
Speed Reference Table
|
Transmission Ratio |
Approx. Output Speed (rpm) |
|
5:1 |
300 |
|
10:1 |
150 |
|
20:1 |
75 |
|
30:1 |
50 |
|
40:1 |
37.5 |
|
50:1 |
30 |
|
80:1 |
18.75 |
|
100:1 |
15 |
Shaft Connection & Mounting Options
Standard drive connection according to DIN 6885/1.
External friction coupling providing a backlash-free, keyless interference fit.
Rubber-buffered reaction support for shaft-mounted, floating gearbox designs.
B5/B14 output flange or cast iron foot base for stationary mounting.
Customization & Engineering Options
Mechanical Modifications: Custom hollow bore diameters, special keyway dimensions, torque arm lengths, and anti-corrosion coatings.
Motor Configurations: Electromagnetic brakes, forced cooling fans for inverter duty (VFD), explosion-proof motors (ATEX), and variable terminal box positions.
Documentation Support: CAD drawings (STEP/DWG), dimensional sheets, and material test reports available for OEM validation.
Quality Control
Every unit undergoes rigorous process monitoring to maintain dimensional accuracy and operating reliability:
Machining Precision: High-precision CNC gear hobbing, housing seat boring, and tight-tolerance hollow shaft keyway cutting.
Inspection Checklist: 100% bore and mounting dimension checks, gear contact pattern inspection, and factory lubricant fill verification.
Testing Protocol: 100% full-speed run testing monitoring noise level, vibration, temperature rise, and motor electrical performance before dispatch.
FAQ
Q: When should I specify a shrink disc over a keyed connection?
A: A shrink disc provides a keyless, zero-backlash, friction-locked clamp. It is ideal for reversing drives, shock-load applications, or environments where fretting corrosion makes keyed shaft removal difficult.
Q: Are these units dimensionally compatible with major international brands?
A: Yes. The G series shares standard mounting centerlines, shaft dimensions, and flange dimensions with leading European gear manufacturers, enabling drop-in replacement.
Q: Can CAD models be provided during the design phase?
A: Yes. 2D dimensional drawings and 3D CAD files (STEP/IGES) are available upon request for direct integration into machine design software.
Q: Can brake motors or VFDs be integrated?
A: Yes. Units can be fitted with electromagnetic disc brakes, encoder feedback, forced-cooling units, and VFD-rated insulation systems.
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