Rack Drives on CNC Machine Tools and Laser Cutters
Why rack pitch error, joint alignment and mounting faces decide accuracy on long CNC and laser axes, and where ground, milled and hardened …
6 min read
Technical Library
PinyiGear technical library — in-depth articles on gear design, gear hobbing, gear grinding, heat treatment (carburizing, nitriding)
82 articles
Sprockets vs Timing Pulleys: Selection and Accuracy
A technical guide to choosing between chain sprockets and timing belt pulleys, covering load capacity, backlash, pitch accuracy, and …
6 min read
Worm Gear Efficiency and Material Selection Guide
How lead angle, friction, lubrication and material pairing shape worm gear efficiency, plus practical selection rules for bronze wheels and …
5 min read
AGMA vs DIN vs ISO: Choosing Gear Accuracy Standards
A practical guide to AGMA, DIN and ISO gear accuracy classes, how they map to each other, and how to specify the right grade for your …
5 min read
ISO 1328 vs DIN 3962: Gear Accuracy Explained
How ISO 1328 and DIN 3962 define gear accuracy, where they differ, and how to read tolerance grades when specifying precision gears.
6 min read
Gear Noise and Vibration Control in EV Transmissions
How micro-geometry, heat treatment and inspection discipline reduce gear noise and vibration in EV reducers and e-drive gearboxes.
6 min read
Precision Gears for Robot Joints: Accuracy, Backlash
How robot joint reducers use precision gears: accuracy grades, backlash control, materials, heat treatment and inspection methods for …
5 min read
Controlling Distortion During Carburizing and Hardening of Gears
How carburizing and quenching affect gear distortion, and which process controls keep case depth, hardness and accuracy predictable in …
5 min read
Gear Grinding and DIN 4-5: A Practical Guide to Accuracy Classes
A technical guide to gear grinding, DIN/ISO/AGMA accuracy classes, and how to specify precision gears that match real application needs.
5 min read
Reading a Gear Inspection Report: Deviation Categories, Where Tolerances Come From, and Three Judgement Points Often Missed
Gear inspection reports show pitch (fpt, Fp), profile (Fα, ffα, fHα) and helix (Fβ, ffβ, fHβ) deviations per GB/T 10095.1 (ISO 1328-1) or …
6 min read
Choosing Between Soft and Hard Gear Tooth Flanks: How the 350 HBW Threshold Drives Material, Heat Treatment and Process Routing
The 350 HBW line separates soft from hard gear tooth flanks: below it, 45 steel at 217-255 HBW and 40Cr at 241-286 HBW are quenched and …
8 min read
Comparing Gear Steel Specifications Between GB, DIN, JIS and AISI: What Conversion Can and Cannot Tell You
Cross-reference tables for carburizing, quenched and tempered, and nitriding gear steels (20CrMnTi, 16MnCr5, SCM420, 8620, 42CrMo4, …
9 min read
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- Sprockets and Roller Chains Machined to Drawing
- Spur and Helical Gears Machined to Customer Drawing
- Worm Gears and Worms for High-Ratio Drives
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- Dongguan Pinyi Electromechanical Technology Co., Ltd
- Room 102, No.24 Houhu Road (Humen Section), Humen Town, Dongguan, Guangdong, China
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