Inline Helical Geared Motor
The Inline Helical Geared Motor combines a high-efficiency electric motor with a coaxial helical gearbox on a unified centerline. This inline transmission layout provides maximum mechanical efficiency (up to 96% per stage) and compact space utilization for modern industrial machinery.
Product Overview
The Inline Helical Geared Motor combines a high-efficiency electric motor with a coaxial helical gearbox on a unified centerline. This inline transmission layout provides maximum mechanical efficiency (up to 96% per stage) and compact space utilization for modern industrial machinery.
Part of the heavy-duty GR Series geared motor family, this drive system is designed for continuous duty requiring precision output speed control, high torque density, and low noise levels.
Technical Specifications
|
Parameter |
Specification & Standard Configuration |
|
Product Type |
Inline Helical Geared Motor (GR Series) |
|
Drive Transmission |
Coaxial / Inline Alignment |
|
Gear Stages |
Single-stage, Two-stage, and Three-stage reduction configurations |
|
Efficiency |
94% - 96% (per transmission stage) |
|
Housing Material |
High-strength HT250 Grey Cast Iron (Ductile Iron optional) |
|
Gear Material |
Premium 20CrMnTi Alloy Steel, Carburized & Quenched (HRC 58-62) |
|
Output Shaft |
Solid Shaft with Precision Keyway (Custom diameters/lengths available) |
|
Mounting Options |
Foot-mounted (B3/B5), Flange-mounted (B5/B14), Foot-Flange combination |
|
Voltage & Frequency |
220V/380V/415V/440V/480V, 50Hz / 60Hz (Dual-frequency available) |
|
Protection & Insulation |
IP55 / IP66 Enclosure, Class F / Class H Insulation |
Key Engineering Advantages
Coaxial Drive Layout: Perfectly aligned input and output shaft centerlines allow straight-line mechanical designs, reducing machine frame footprints.
High Efficiency & Energy Savings: Helical gear design yields lower thermal losses compared to worm gears, delivering up to 96% efficiency per reduction stage.
High Overhung Load Capacity: Heavy-duty tapered and spherical roller bearings absorb substantial radial and axial forces from external chain and sprocket drives.
Interchangeable Modular Design: Standardized mounting dimensions allow straightforward direct-drop replacement of existing European and global gearmotor brands.
Comprehensive Environmental Options: High-temperature oil seals, anti-corrosion painting systems, and IP66 enclosures allow reliable operation in washdown, marine, or corrosive environments.
Applications
Continuous running, controlled acceleration, moderate starting torque.
High radial load resistance, sustained low-speed high-torque performance.
Compact drive footprint, highly repeatable output speeds.
Variable operating loads, high starting torque, heavy axial/radial force absorption.
Mounting and Mechanical Configurations
Foot Mounting (B3)
Bolted directly to a rigid machine frame or base plate. Standard for industrial conveyors and heavy machinery.
Flange Mounting (B5 / B14)
Directly bolts to the driven machine interface for tight axial alignment.
Solid Shaft Options
Standard metric/imperial precision solid shafts with keyways; custom dimensions, splines, or dual-shaft extensions available.
Electrical Options
|
Standard Voltages |
220V / 380V / 415V / 440V / 460V / 690V (or multi-voltage options) |
|
Frequency & Speeds |
50 Hz / 60 Hz; 2-pole, 4-pole, 6-pole, 8-pole motors |
|
Protection & Insulation |
IP55 standard (IP65/IP66 optional); Class F insulation with Class B temperature rise |
|
Auxiliaries |
DC/AC electromagnetic safety brakes, incremental/absolute encoders, forced cooling fans for inverter duty (VFD) |
How to Select the Correct Gearmotor
Proper sizing prevents premature failure and ensures maximum operational life. Follow these engineering selection steps:
- Required Output Speed: Determine driven machine speed.
- Gear Ratio = Motor Input Speed / Required Output Speed
Operating Torque: Calculate continuous running torque, factoring in starting peak loads and duty cycles (Service Factor).
Motor Power: Match power based on calculated output torque and gearbox thermal capacity.
Radial Load Check: For drive connections using chains, sprockets, belts, or gears, calculate external radial force acting on the output shaft and ensure it is below permissible limits.
Mounting & Mechanical Constraints: Confirm shaft diameter, key dimensions, flange size, motor frame size, and surrounding installation clearance.
OEM & Custom Engineering Support
We support custom engineering for machine builders and direct replacement projects:
Customizable Items: Gear ratios, motor voltages/frequencies, custom output shaft lengths/diameters, special flange profiles, high-temp seals, custom paint finishes.
Replacement Orders: Provide your existing nameplate photo, drawing, or key dimensions-our engineering team will identify or adapt a direct drop-in replacement.
Export Packaging, Lead Time & Warranty
|
Export Packaging |
Seaworthy IP-rated heavy-duty wooden crates with anti-rust oil treatment, vacuum plastic sealing, and shaft protection sleeves. |
|
Lead Time |
7-10 days for standard units; 20-25 days for custom OEM production orders. |
|
Commercial Warranty |
18 Months Global Warranty from dispatch date. |
|
Technical Documentation Supplied |
2D dimensional CAD drawings, 3D STEP models, material certificates, and user operating/maintenance manuals. |
Frequently Asked Questions
Q: What is the main benefit of an inline helical gearmotor?
A: Its coaxial layout keeps the motor and output shaft on the same centerline, saving lateral space and enabling direct transmission alignment.
Q: What is the standard warranty and lead time for export orders?
A: Standard warranty is 18 months. Standard configured models are shipped within 7-10 working days; customized OEM orders take 20-25 days.
Q: How do I handle heavy overhung loads from a chain drive?
A: Provide your sprocket pitch diameter and chain position. We will verify the overhung radial load against the permissible shaft ratings of the selected model size.
Q: Do you supply 3D CAD models for engineering design?
A: Yes, STEP/IGES 3D models and 2D CAD drawings are provided within 24 hours to assist OEM equipment design.
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