What is the lead time for delivery?

The usual lead time is 7-10 working days, while the busy season takes 20 working days, based on the detailed order quantity.

What is the precision range of the gearbox?

The precision range is 8-16 arcmin, suitable for most occasions, with specific levels like L1 and L2 offering different backlash values.

What is the maximum input speed?

The maximum input speed ranges from 4000 to 8000 rpm depending on the specific model (PRF40 to PRF160).

High Torque External Gear Ratio 28: 1 Planetary Gear Boxes

Name: High Torque External Gear Ratio 28: 1 Planetary Gear Boxes
Brand: Shenzhen Hefa Gear Machinery Co., Ltd.
SKU: 1951949075

Guangdong, ChinaShenzhen Hefa Gear Machinery Co., Ltd.

US$150.00

2-49 Pieces

US$26.00

50+ Pieces

Sample price:US$130.00/piece.Request sample

Product profile

Customization

Available

Application

Motor, Motorcycle, Machinery, Marine, Agricultural Machinery, Textile Machinery

Function

Change Drive Direction, Speed Changing, Speed Reduction

Model NO.

PRF80 series

Layout

Coaxial

Hardness

Hardened Tooth Surface

Installation

Vertical Type

Step

Single-Step

Type

Planetary Gear Box

Gear Shape

Bevel Gear

Speed Ratio

28:1

Precision Range

Backlash:8-16arcmin

Transport Package

Carton Box

Specification

size80

Trademark

Newgear

Origin

China

HS Code

8483402090

Production Capacity

100000 Set

Key features

High Torque Output: Delivers up to 2.5 times rated torque for emergency stops and reliable performance.

Wide Speed Ratio Range: Offers ratios from 3:1 to 100:1 with precision backlash as low as 8 arcmin.

Long Service Life: Average lifetime reaches 20,000 hours with hardened tooth surface and low noise.

High Efficiency: Full load efficiency up to 96% for L1 stage and 94% for L2 stage.

Versatile Applications: Suitable for motors, motorcycles, machinery, marine, agricultural, and textile equipment.

Robust Construction: Features low carbon alloy steel gears with carburizing quenching and nitriding processes.

Flexible Installation: Vertical installation type with threaded connection and round flange shaft output.

IP65 Protection: Dust and water resistant design with operation temperature range from -10 to 90 degrees Celsius.

Company profile

Shenzhen Hefa Gear Machinery Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2015-02-28 CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤4.76h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryShenzhen Hefa Gear Machinery Co., Ltd. is a China-based manufacturing factory established in 2009, with 294 employees and more than 10 production lines. Its stated product scope covers precision gears, timing pulleys, planetary gear reducers, worm gears, racks, couplings, and related components. The supplier reports ISO9001:2015 certification, 41–50 quality-control staff, eight R&D engineers, and annual planetary gearbox productivity of 200,000 units. It offers personalized services and describes a quality-first, continuous-improvement approach. Export activity began in 2015, with markets spanning multiple regions and Shenzhen port proximity. Evidence supports production scale, quality-system certification, product customization, and international fulfillment capability. However, the provided information does not establish financial credibility, documented after-sales procedures, or specific customer cases.

Supplier typeThe supplier is identified as a factory in Shenzhen, China, operating in manufacturing. Its legal entity is Shenzhen Hefa Gear Machinery Co., Ltd., established in 2009, with 294 employees.

CertificationsThe supplier explicitly reports holding an ISO9001:2015 certificate. This provides direct evidence of a certified quality management system, although no additional certifications are listed.

R&D capabilityThe supplier reports eight R&D engineers and describes continuous improvement and innovation as operating principles. Its product scope includes precision gears, planetary reducers, and other specialized transmission components, supporting some innovation capability, but no patents, R&D investment, or product-development results are stated.

Production capacityThe supplier has 294 employees, more than 10 production lines, 41–50 quality-control staff, and reported annual productivity of 200,000 planetary gearboxes. It also states an off-peak lead time within 15 working days and peak-season fulfillment of 2–3 months, indicating established production capacity with seasonal variation.

Customization capabilityThe supplier explicitly states that it provides personalized services and focuses on customer participation in the manufacturing process. Its offerings include multiple precision transmission products, while the representative title also references manufacturing and customization; this supports customization capability, though detailed customization boundaries are not specified.

Product Q&A

Q:Who are we?

Hefa Group is based in Guangdong, China, started in 1998, with three subsidiaries. Main products include planetary gearboxes, timing belt pulleys, helical gears, spur gears, gear racks, gear rings, chain wheels, hollow rotating platforms, and modules.

Q:How can you guarantee quality?

We always conduct a pre-production sample before mass production and perform a final inspection before shipment.

Q:How to choose the suitable planetary gearbox?

Please provide relevant parameters. If you have a motor drawing, we can recommend a suitable gearbox faster. Otherwise, provide output speed, output torque, voltage, current, IP, noise, operating conditions, motor size, and power.

Q:Why should you buy from us not from other suppliers?

We are a 22-year experienced manufacturer specializing in making all kinds of spur, bevel, helical gears, grinding gears, gear shafts, timing pulleys, racks, planetary gear reducers, timing belts, and transmission gear parts.

Q:What services can you provide?

Accepted delivery terms include Fedex, DHL, and UPS. Accepted payment currencies are USD, EUR, HKD, GBP, and CNY. Accepted payment types are T/T, L/C, PayPal, and Western Union. We speak English, Chinese, and Japanese.