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Carburizing, Quenching, and Tempering - Surface Hardness HRC58-62
Gear Accuracy
ISO 17485 Grade 7 ~ 9
Surface Hardness
HRC 56 ~ 62
Brand Name
DINGSCO
Certification
ISO 9001
Place of Origin
Changsha, China
Hand Drill 20CrMnTi High-Speed Gear Set for Electric Power Tool Transmission Systems
Electric hand drill gears are high-speed heavy-duty transmission gears specially designed for power tools such as cordless hand drills, impact drills, electric screwdrivers and lithium-ion drills. Made of high-strength wear-resistant alloy structural steel through precision forging, hobbing, heat treatment and finishing, they are mainly used for speed reduction, torque increase, reversing drive, clutch speed regulation and power output of hand drills. Featuring impact resistance, fatigue resistance, small size, strong load capacity and long service life, they are core transmission components for power tools to achieve high speed, large torque and continuous operation.
Product Features
Strong high-speed heavy-duty performance, suitable for high-speed and frequent impact conditions of drills.
Impact and fatigue resistant, able to withstand frequent start-stop and forward-reverse impacts.
High tooth surface hardness and excellent wear resistance, not easy to wear or pit after long-term use.
Small size and compact structure, suitable for narrow internal installation space of hand drills.
Stable transmission, low noise and small vibration, providing comfortable grip.
Small heat treatment distortion, high dimensional accuracy, strong assembly consistency and interchangeability.
Compatible with clutch, speed regulation and impact mechanisms, with sensitive transmission response.
Technical Parameter Table
Module
0.6 ~ 2.5
Teeth Number
8 ~ 40
Accuracy Grade
ISO 17485 Grade 7 ~ 9
Material
20CrMnTi,20CrMo,40Cr,SCM415
Heat Treatment
Carburizing & quenching + low temperature tempering
Surface Hardness
HRC 56 ~ 62
Max. Speed
≤ 20000 rpm
Transmission Efficiency
≥ 95%
Operating Temperature
-10℃ ~ +70℃
Applicable Torque
10 ~ 80 N·m
Main Applications
Reduction gear sets for cordless hand drills, lithium-ion drills and handheld drills.
Transmission systems for impact drills, hammer drills and multi-function drills.
Clutch gears for electric screwdrivers, drivers and torque wrenches.
High-low speed switching gears for dual-speed and adjustable-speed hand drills.
Gear maintenance and replacement for household and industrial power tools.
Supporting production for hand drill gears of various domestic and imported brands.
Product Advantages
Strong high-speed load capacity, capable of continuous operation over 20000rpm.
Impact and fatigue resistant, adapting to frequent impact, start-stop and reversing conditions.
Excellent wear resistance and long service life, reducing tool failure rate.
Compact and lightweight structure without increasing overall weight of the drill.
Stable transmission and low noise, improving operation comfort.
Strong interchangeability, directly replacing drill gears of various brands.
Support customization of dual, triple and planetary gear sets with strong adaptability.
Production Process
Raw Material Inspection → 2. Precision Cold/Hot Forging → 3. Normalizing Treatment
Low Temperature Tempering → 8. Bore & End Face Grinding → 9. Gear Grinding / Shaving
Deburring, Cleaning & Sandblasting → 11. Full Inspection of Accuracy, Hardness & Flaw
Anti-rust Treatment & Packaging
Cautions
Over-torque and overload drilling are strictly prohibited to avoid gear impact fracture.
Dry running without oil is forbidden to prevent high-temperature burning and rapid wear of tooth surfaces.
Striking the tooth surface during installation is not allowed to avoid tooth deformation and accuracy reduction.
Prevent dust, iron chips and sediment from entering the gearbox to avoid abrasive wear.
Avoid excessively high working temperature to prevent grease failure and increased wear.
Stop immediately for inspection if abnormal noise, jitter or abnormal speed occurs.
Gears must be replaced in pairs when severely worn or chipped.
Keep storage environment dry and ventilated to prevent corrosion from affecting service life.
Why Choose us?
7-axis CNC Grinding: Tolerances as tight as ±5μm for quiet, durable operation.
Strong technical expertise: Doctoral and master’s professionals in spiral bevel gear technology.
Custom Design: Solutions for high-reduction, high-speed, heavy-load, and low-noise and less teeth for users
Rigorous Testing: 100% inspection via Gleason metrology systems.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1994
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Cha... Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Cha...
