Hollow Shaft Parallel Geared Motor
The G Series Hollow Shaft Parallel Geared Motor features a high-efficiency parallel-shaft helical design engineered for direct coupling to driven machine shafts. By eliminating external couplings and transmission components, this compact drive assembly optimizes space and simplifies installation in heavy-duty mechanical layouts.
Technical Specifications
|
Parameter |
Technical Specification |
|
Series |
GF Series (Parallel-Shaft Helical) |
|
Gear Stages |
2-stage or 3-stage |
|
Rated Power Range |
0.12–200 kW |
|
Transmission Ratio |
3.77–31,434 |
|
Max. Output Torque |
Up to 18,000 N·m |
|
Output Shaft Type |
Keyed hollow shaft / Shrink-disc hollow shaft |
|
Housing Material |
High-strength cast iron |
|
Gear Material & Hardening |
Low-carbon alloy steel; Carburized & precision ground |
|
Installation Positions |
M1, M2, M3, M4, M5, M6 |
|
Operating Conditions |
Ambient temp: -10°C to +40°C; Altitude: Up to 1,000 m |
Key Features
Direct Shaft Coupling: Keyed hollow shaft or shrink-disc configuration mounts directly onto the driven shaft, minimizing external hardware and maintenance.
Space-Saving Parallel Layout: Aligned input and output shafts accommodate compact, low-profile machine architectures.
Broad Performance Envelope: Power range spanning 0.12–200 kW and output torque up to 18,000 N·m across 10 gearbox frame sizes.
Flexible Mounting Options: Available in shaft-mounted, B5 flange, B14 flange, and torque-arm configurations to suit diverse structural requirements.
High Gear Precision: Carburized and precision-ground helical gears deliver high transmission efficiency, quiet operation, and extended service life.
Applications
Belt & Chain Conveyors: Shaft-mounted direct drive saves space and handles dynamic startup loads.
Roller & Bucket Elevators: High-torque capacity with torque-arm options for continuous bulk material handling.
Packaging & Textile Machinery: Smooth transmission performance where input and output shafts must remain parallel.
Paper, Printing & Steel Equipment: Heavy-duty auxiliary drive solutions matching high radial load and continuous operating demands.
Motor & Custom Options
Electric Motors: 3-phase asynchronous (2P/4P/6P/8P), IE3 energy efficient, dual voltage/frequency (50 Hz/60 Hz), electromagnetic brake motors, and explosion-proof variants.
Mechanical Options: Reinforced output bearings, custom hollow shaft diameters, backstops, special oil seals (Viton), and synthetic lubricant fillings for extreme temperatures.
Installation & Maintenance Requirements
Verification: Confirm hollow shaft bore diameter, keyway dimensions, shaft insertion depth, and motor rotation direction prior to startup.
Shrink-Disc Installation: Mating shaft surfaces must be thoroughly degreased and cleaned before tightening bolts in sequence to specified torque ratings.
Reaction Torque: Ensure torque arms are fitted with flexible rubber buffers to eliminate rigid axial stresses on gearbox bearings.
Quality Control
CNC centers control critical tolerances on housings, shafts, and gear teeth.
Increases tooth surface wear resistance while retaining a tough, shock-absorbing core.
Post-heat-treatment tooth grinding ensures accurate profile contact, minimizing noise and vibration.
Automated gear checkers verify tooth profile, lead, and pitch accuracy prior to final assembly and factory run-testing.
Frequently Asked Questions
Q: What is the main structural advantage of a hollow shaft parallel geared motor?
A: It mounts directly onto the driven shaft, eliminating external couplings, alignment issues, and extended mounting frames to create a highly compact drive solution.
Q: What is the difference between GFA and GFH configurations?
A: GFA uses a standard keyed hollow shaft for shaft transmission. GFH utilizes a shrink-disc hollow shaft for keyless, zero-backlash frictional clamping on smooth shafts.
Q: Are 2D and 3D CAD drawings available prior to ordering?
A: Yes, full STEP, DWG, and PDF drawings are provided for engineering verification upon selecting the required gearbox size and mounting type.
Q: Can this unit replace an existing European or international brand gearbox?
A: Yes. Mounting dimensions, shaft centerlines, and flange orientations align with international modular standards for direct drop-in replacement.
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