Two-Stage Bevel Helical Geared Motor
The Two-Stage Bevel Helical Geared Motor combines a high-efficiency three-phase AC motor with a heavy-duty two-stage helical-bevel gear unit. Designed for 90-degree power transmission, the primary helical gear stage delivers initial speed reduction, while the secondary bevel gear stage changes power flow by 90 degrees to drive the output shaft.
Product Overview
The Two-Stage Bevel Helical Geared Motor combines a high-efficiency three-phase AC motor with a heavy-duty two-stage helical-bevel gear unit. Designed for 90-degree power transmission, the primary helical gear stage delivers initial speed reduction, while the secondary bevel gear stage changes power flow by 90 degrees to drive the output shaft. This integrated housing design eliminates external couplings, delivering high torque density and mechanical efficiency up to 96% in a compact footprint.
Technical Specifications
|
Parameter |
Specification |
|
Product Type |
Two-Stage Bevel Helical Geared Motor |
|
Gear Arrangement |
Two-stage (Primary Helical Stage + Secondary Bevel Stage) |
|
Transmission Angle |
90-Degree Right-Angle Output |
|
Motor Power Range |
0.12 kW - 200 kW (0.16 HP - 270 HP) |
|
Gear Ratio Range |
3.98 : 1 - 180.00 : 1 |
|
Output Speed Range |
0.8 rpm - 375 rpm |
|
Output Torque Range |
80 N.m - 50,000 N.m |
|
Gear Unit Sizes |
Sizes 37, 47, 57, 67, 77, 87, 97, 107, 127, 157, 167, 187 |
|
Output Shaft Type |
Solid Shaft with Key / Hollow Shaft with Keyway or Shrink Disc |
|
Output Shaft Diameter |
20 mm - 120 mm |
|
Supply Voltage & Frequency |
220V / 380V / 415V / 440V / 480V / 660V @ 50 Hz or 60 Hz |
Primary Advantages
90-Degree Space-Saving Layout: Perpendicular power flow simplifies machinery layouts where inline space is constrained.
High Efficiency (Up to 96%): Outperforms traditional worm gearboxes by 20% - 30%, resulting in significantly lower electrical consumption over continuous operation.
High Load Capacity & Durability: Heavy-duty iron housings combined with carburized gear teeth handle severe shock loads and demanding start-stop duty cycles.
Flexible Mounting & Shaft Connections: Easily configured with solid key shafts, hollow shafts with shrink discs, foot bases, or torque arms.
Modular Versatility: Integrates directly with DC brakes, backstops, encoders, and forced cooling fans for inverter-driven applications.
Industrial Application
Belt & Chain Conveyors: High starting torque (over 200%) and right-angle mounting eliminate driving head overhang.
Roller Conveyors: Direct hollow-shaft mounting simplifies multi-segment conveyor line drive layouts.
Mixers & Agitators: Heavy-duty output bearings support axial thrust loads from agitator impellers.
Automated Palletizers & Material Handling: Precise Start-Stop positioning when integrated with electromagnetic brakes and VFDs.
Packaging Machinery: Quiet operation (under 68 dB) and compact envelope fit inside washdown packaging enclosures.
Internal Gear Structure
Helical Gear Stage: High-precision helical gears deliver the primary speed reduction. Helical tooth profiles ensure high overlap ratios, continuous tooth engagement, low noise, and minimal vibration.
Bevel Gear Stage: Precision spiral bevel gearing turns the rotational axis by 90 degrees. Designed with high tooth bending strength to handle peak radial and axial torque loads.
Integrated Monoblock Drive: The motor frame bolts directly to the cast housing, ensuring absolute shaft alignment, preventing oil leakage, and eliminating external coupling maintenance.
Mounting Configurations
Foot Mounting (K)
Base-mounted configuration with precision-machined feet.
B5 Flange Mounting (KF)
Output flange with clearance holes for wall or frame attachment.
Hollow Shaft with Torque Arm (KA / KT)
Shaft-mounted configuration with reaction torque arm.
B14 Flange Mounting (KAF)
Compact face flange for space-restricted machine frames.
Manufacturing Quality Inspection
Precision Gear Grinding: CNC gear grinding machines achieve ISO Class 6 tooth accuracy for ultra-quiet tooth engagement.
Vacuum Carburizing Heat Treatment: Ensures deep hardened casing (0.8 - 1.2 mm) with a tough gear core to prevent tooth breakage under shock loading.
CMM Inspection: Coordinate Measuring Machines verify shaft alignment, housing bore geometry, and gear mesh clearance.
100% Factory Testing: Every assembled unit undergoes a full quality check before painting and dispatch:
- No-load running test (Noise level under 68 - 75 dB)
- Temperature rise test
- Vibration analysis
- 100% High-pressure oil leakage test
Traceability: Full material mill certificates and factory inspection test reports (3.1 Certificate) supplied per order.
OEM Customization Options
Mechanical
Custom shaft diameters, special keyways, stainless steel shafts, custom flange adapter plates.
Surface Protection
Special epoxy paint finishes for marine (C4/C5 corrosion protection) or food-grade environments.
Electrical
Special voltages (600V / explosion-proof ATEX ratings / UL/CSA certified motor connections).
Frequently Asked Questions
Q: What basic information is needed to select the correct geared motor model?
A: Provide target output speed (rpm) or ratio, required torque (N.m) or motor power (kW), operating duty/load type, voltage/frequency, and mounting style (foot, flange, or hollow shaft).
Q: Can these drives operate under variable frequency drive (VFD) speed control?
A: Yes. Motors feature inverter-grade insulation. For continuous operation below 20Hz at full load, an optional external forced cooling fan (IC416) is recommended to prevent motor overheating.
Q: What is the main efficiency advantage of bevel-helical over worm gearboxes?
A: Bevel-helical gear sets achieve up to 96% drive efficiency, whereas worm gearboxes lose significant power to friction (often 60-85% efficient). This difference lowers energy usage and operating heat.
Q: What shaft options are available for hollow-shaft mounting?
A: We offer hollow shafts with parallel keys (DIN 6885-1), hollow shafts configured for shrink discs (friction coupling), and involute splined hollow shafts (DIN 5480).
Q: What is the standard lead time for customized or OEM volume orders?
A: Standard units ship in 7-12 business days. Customized OEM configurations, special shaft dimensions, or ATEX-certified builds typically ship in 15-20 business days.
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