Spur gears mainly consist of a gear ring and a wheel body. The gear ring part has uniformly distributed gear slots, forming the working tooth profile (involute tooth profile), which transmits motion and power through the meshing of teeth; the wheel body part has an internal hole for installation (which may have a keyway or spline), bolt holes for connection, and process holes for balancing. The product surface is ground, with a tooth surface roughness Ra ≤ 0.8μm, ensuring smooth operation, low noise, and strong load capacity. Customization based on drawings and samples is supported, providing a one-stop solution from design, processing to inspection.
Classification
1. By tooth profile: involute gears (most common), circular arc gears
2. By accuracy grade: GB/T 10095 (ISO 1328) accuracy grades 5-9
3. By material: alloy structural steel (20CrMnTi, 42CrMo), carbon steel (45#, 50#), cast steel (ZG35Ⅱ)
4. By structure: solid gears, web gears, spoked gears
5. By application: reducer gears, working machine gears (such as rolling mill gears, crane gears)
Scope of application
1. Mechanical manufacturing: reducers, gearboxes, machine tool (lathe, milling machine) transmission systems
2. Metallurgical industry: power transmission for rolling mills, continuous casting machines, conveyor roller paths
3. Mining and lifting: walking mechanisms and hoisting mechanisms of excavators, cranes, and hoists
4. Transportation equipment: vehicle gearboxes, differential gears (customized)
5. Petrochemical and construction machinery: transmission devices for mixers, pumps, and engineering vehicles
6. Others: packaging machinery, printing machinery, food machinery, and other scenarios requiring parallel shaft transmission
Working principle
Spur gear transmission achieves motion and power transmission between parallel shafts through the successive meshing of the tooth profiles of two gears. The specific process:
1. Meshing conditions: the module (m) and pressure angle (α) of the two gears must be equal, and the tooth thickness on the pitch circle equals the slot width.
2. Transmission process: when the driving gear rotates, its tooth profile drives the tooth profile of the driven gear, maintaining continuous and uniform meshing. The transmission ratio (i) equals the ratio of the number of teeth of the two gears (i=Z₂/Z₁), achieving speed increase or reduction.
3. Load transmission: power is transmitted through the gear meshing point (node), and the tooth surface contact stress and root bending stress must be within allowable limits to ensure smooth transmission.
Spur gear model parameter table
Parameters |
Common range/example values |
Description |
Module (m) |
1-30mm |
Standard modules (such as 2, 3, 4, 5, 8, 12, etc.) |
Pressure angle (α) |
20° (standard value) |
Pressure angle of involute tooth profile |
Number of teeth (Z) |
12-300 |
Selected based on transmission ratio and installation space |
Tooth width (b) |
10-500mm |
Usually b ≤ 0.3m × Z (m is the module) |
Pitch circle diameter (d) |
d = m × Z |
Gear reference diameter |
Addendum circle diameter (da) |
da = d + 2m |
Addendum circle diameter |
Root circle diameter (df) |
df = d - 2.5m |
Root circle diameter (considering root fillet to avoid undercut) |
Center distance (a) |
a = (d₁ + d₂) / 2 |
Sum of the pitch circle radii of the two gears |
Accuracy grade |
GB/T 10095 grades 6-7 |
Affects transmission smoothness and noise |
Tooth surface hardness |
58-63 HRC (carburized layer) |
Carburized layer depth 0.8-1.5mm |
Keywords
Previous: Arc bevel gear
Next： Human-shaped gear
Spur gear
Contact Information
Product Categories
Related Products
Related Products
Ball mill
Ball mill
Rod Mill
(Semi) Autogenous Mill
Mining Hoisting
Single-rope Winding Mine Hoist
Multi-rope friction mine hoist
Well Drilling Hoist
Supporting Equipment
Mining Washing and Selection
Selective Crusher
Centrifuge
-
WLL Series Coal Slime Scraper Discharge Centrifugal Dehydrator
-
WZY Series Dual-Mass Horizontal Vibrating Centrifugal Dehydrator
-
WZL Series Horizontal Vibrating Centrifugal Dehydrator
-
TWZ Series Horizontal Vibrating Centrifugal Dehydrator
-
LLS-900 Sludge Centrifugal Dehydrator
-
ML Series Coal Slurry Centrifugal Dewatering Machine
-
LL Series Vertical Centrifugal Dehydrator
Flotation machine
Filter machine
Grading Machine
Mining Auxiliary Equipment
Gear Reducer Series
-
Vertical mill gearbox
-
Special reducer for scraper machine
-
Industry-specific gear reducer
-
Bevel Gear Reducer
-
Cylindrical Gear Reducer
-
Planetary Gear Reducer
-
Parallel shaft reducer
-
Industrial General Gearbox Series
-
Helical Gear - Bevel Gear Reduction Motor
-
Helical Gear Reduction Motor
-
Planetary Gear Reducer
-
Cylindrical Gear Reducer
Category One
Category Two
Crusher Series
Rotary Crusher
Jaw Crusher
Impact Crusher
Cone Crusher
Ball Press Machine
High-pressure briquetting machine
Medium and High Pressure Briquetting Machine
Roller Press
Rotary kiln
-
Cement kiln (rotary kiln)
-
Light gray kiln (self-alkali steam calcination kiln)
-
Chemical kiln
-
Oxidation Cooling Kiln
-
Oxidative roasting rotary kiln (oxidation kiln)
-
Lithium Carbonate Rotary Kiln
-
Lime Rotary Kiln
-
Metal Magnesium Rotary Kiln
-
Architectural Lightweight Aggregate Rotary Kiln
-
Cement Rotary Kiln
Cast and forged parts
Large castings
Large Forgings
Transmission Accessories
Gear Coupling
Electro-hydraulic control system
Automation Control
-
GPRS Remote Expert Diagnosis System
-
Metallurgical Electrical Control Equipment
-
Ore Dressing and Coal Washing Automation Control System
-
System Local Modification
-
Doubly-fed variable frequency electric control system
-
All-digital DC electric control system
-
Full digital low-voltage variable frequency feedback
-
Disc Brake Online Detection System
-
Rotary Kiln Control System
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic System
-
Hydraulic Station
-
Variable Frequency Servo Hydraulic System
-
E119A/E119S E118A/E118S Explosion-proof Secondary Brake Hydraulic Station
-
Constant Deceleration Electro-Hydraulic Brake Control Device
-
TE160/TE161/TE162/TE163 Cartridge Control Two-Stage Brake Hydraulic Station
Hydraulic cylinder
Other accessories
Large welded components
Wear-resistant products
-
Jaw crusher jaw plate
-
New High-Pressure Roller Wear-Resistant Overlay Welding Technology
-
Bus Alloy Bearing Shell
-
Large ball mill ZGMN13CR2 liner
-
Medium chrome alloy liner
-
Manganese Steel Series Products
-
High carbon cast iron parts
-
Low-carbon martensitic steel jaw plate
-
Large self-grinding mill shell liner
Engineering Plastics
-
Elevator modified PP head wheel and guide wheel liners
-
Nylon products
-
Polyurethane products
-
Multi-rope hoist phenolic resin blocks and fixed blocks
-
Imported from Germany—LUWIPLAST GELB848 friction lining
-
Single-rope mine hoist plastic liner
-
WSM-3 New Environmentally Friendly Asbestos-Free Gate Valve (Hoisting Mechanism Brake)
-
KP-09 Ultra-high Molecular Weight Sprocket Liner
-
GDM326 Imported Material High-Performance Friction Lining
Contact Us
No.99 Hengshan Road, Jianxi District, Luoyang City, Henan Province
sweep
CITICTLC
Learn more about dynamic information