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Xuzhou Kehuan Mechanical and Electrical Equipment Co., Ltd [Jiangsu,China] Business Type:Manufacturer Main Markets: Asia , Europe , Africa Exporter:21% - 30% Certs:ISO9001

Xuzhou Kehuan Mechanical and Electrical Equipment Co., Ltd

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Home > Products > Electric Motor > Bulk KH120 Helical Gear Differential Motor for Electric Tricycles

Bulk KH120 Helical Gear Differential Motor for Electric Tricycles
  • Bulk KH120 Helical Gear Differential Motor for Electric Tricycles
  • Bulk KH120 Helical Gear Differential Motor for Electric Tricycles
  • Bulk KH120 Helical Gear Differential Motor for Electric Tricycles
  • Bulk KH120 Helical Gear Differential Motor for Electric Tricycles
  • Bulk KH120 Helical Gear Differential Motor for Electric Tricycles

Bulk KH120 Helical Gear Differential Motor for Electric Tricycles

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Overview
Product Attributes

Brand: KEHUAN

Origin: China

Certification: ISO 9001:2015

Supply Ability & Additional Information

Packaging: Carton box with foam protection inside

Transportation: Land,Ocean

Place of Origin: China

Certificate: ISO 9001:2015

HS Code: 8501330000

Payment Type: T/T

Incoterm: FOB

Packaging & Delivery
Selling Units:
Piece/Pieces
Package Type:
Carton box with foam protection inside
Passenger tricycle drivers earn by the kilometer. A noisy drivetrain is not just a comfort issue — it is a competitive one. In markets where passengers choose between three identical e-trikes waiting at the same stand, the quiet one gets picked first. Meanwhile, distributors importing motors for tricycle OEMs face a different problem: straight-cut gear motors are cheap but loud, and returning to the supplier for noise warranty claims across 500 units costs more than the unit price difference. For buyers sourcing a helical gear differential motor for electric tricycles, the question is not whether to pay for quieter gears. It is how many noise complaints it takes to make the math obvious.
 
The KH120 helical gear differential motor eliminates that calculation. Helical-cut gears reduce gear mesh noise by 40–60% versus straight-cut equivalents — measurable in dB, audible in the first test ride. Rated 350W–1800W at 48V/60V/72V, with the same integrated differential that handles independent wheel speed on tricycle rear axles, this motor covers the full passenger tricycle power range. Quiet enough for medical transport. Durable enough for 300 km/day intercity routes.
 
Helical Gear Electromagnetic Brake Motors

Technical Specifications

Core Performance
 
Parameter Value
Motor Series KH120
Motor Type Brushless DC (BLDC) / Permanent Magnet Synchronous (PMSM)
Power Range 350W – 1,800W
Voltage 48V / 60V / 72V
Rated Speed 1,800 – 5,500 r/min
Gear Type Helical cut (oblique tooth)
Magnet Height 25h – 80h
Efficiency ≥ 85%
 
Mechanical & Environmental
 
Parameter Value
Torque Range 10 – 45 N.m
Wire Diameter 3 – 10 mm²
Protection Grade IP54
Insulation Class Class E
Hall Angle 120°
Operating Temperature -25°C – +45°C
Max Altitude ≤ 4,000m
Certifications ISO 9001:2015
 
Helical Gear Electromagnetic Brake Motors

Why Choose Us

Helical Gears — Quieter by Design, Not by Chance

The difference between straight-cut and helical-cut gears is not cosmetic. Straight-cut gear teeth engage all at once — sudden load, sudden noise spike, repeated thousands of times per minute. Helical-cut gear teeth engage progressively across the tooth face, distributing load and spreading engagement time. The result is 40–60% lower gear mesh noise, measurable with a sound meter. For a quiet e-rickshaw motor with helical gears buyer distributing to passenger operators in urban markets, this is the difference between a product that gets repeat orders and one that generates warranty calls.
 

Differential on Three Wheels — Where It Actually Matters

A passenger tricycle Rear Axle has two driven wheels. Without a differential, both wheels are forced to rotate at the same speed — on every turn, the outer wheel drags, the inner wheel skips, and the rear of the vehicle pushes sideways. Experienced drivers compensate instinctively, but the chassis wears. The KH120 helical gear differential solves this at the source. Independent wheel speed on every turn means no drag, no skip, and no asymmetric wear on the rear axle bearings. For OEM assemblers, it means fewer warranty calls about rear-end handling on the first 5,000 km.
 

Sine Wave Compatible — The Quiet Motor Needs a Quiet Controller

A brushless tricycle motor with low noise gearbox is only as quiet as the controller driving it. Square wave controllers introduce current ripple that creates audible motor whine — even with helical gears. Kehuan manufactures sine wave controllers calibrated to KH120 motor parameters, eliminating controller-induced noise. The Electric Tricycle Controller and Electric Tricycle Differential Box are produced and validated alongside this motor in our ISO 9001:2015 facility. For distributors selling into noise-sensitive markets, specifying the KH120 helical motor with a Kehuan sine wave controller is the complete solution — not half of one.
 

Compatibility Guide

Vehicle Compatibility
 
Vehicle Type Typical Power Suitability Notes
Passenger e-rickshaw (3-wheel) 800W – 1,000W Primary target Helical + sine wave controller for quiet operation
Cargo tricycle 800W – 1,800W Compatible Higher torque variant for heavy loads
Medical / accessible transport trike 500W – 800W Compatible Sine wave controller required
4-wheel low-speed vehicle 800W – 1,000W Compatible Confirm mounting for 4-wheel differential setup
 
Comparison
Helical Gear vs Straight Gear for Passenger Tricycles
 
Parameter Straight-Cut Differential Motor KH120 Helical Gear Differential
Gear noise at cruise speed Audible — 65–75 dB (typical) Reduced — 40–60% lower dB
Noise in slow urban traffic Prominent Near-silent with sine wave controller
Torque smoothness Pulsed (tooth-by-tooth engagement) Progressive (continuous face engagement)
Gear wear pattern Accelerated — point contact Distributed — face contact
Controller requirement Square wave compatible Square or sine wave (sine recommended)
Target market Cargo / utility applications Passenger / noise-sensitive applications
 
Passenger operators who switch to helical differential motors report the benefit before they can measure it — passengers stop commenting on the noise, and that is the point.
 
Helical Gear Electromagnetic Brake Motors

Contact Us

Passenger operators choose quiet drivetrains for a reason passengers cannot explain — they just prefer the quiet vehicle. The KH120 helical gear differential motor delivers the gear noise reduction that makes that choice happen, backed by Kehuan's factory-matched sine wave controller for the complete low-noise drivetrain.
 
Contact Kehuan for:
 
  • KH120 helical gear motor sample with Kehuan sine wave controller
  • Noise comparison data (helical vs straight-tooth, dB at rated speed)
  • Bulk pricing (50+ units) for tricycle OEM assembly lines
  • Custom torque curves for specific vehicle load and grade requirements
  • Electric Cargo Tricycle drivetrain packages (high-torque motor + controller + differential box)
Kehuan Electric — 13 years of electric vehicle drive system manufacturing, 1,000+ B2B clients, ISO 9001:2015 certified.

Product Categories : Electric Motor

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