Technical guides, application notes and selection articles based on real product data and engineering knowledge. Content is published only after technical review.
Technical guide
Mounting position controls oil fill level, breather and drain plug location, oil sight glass position and gearbox thermal behaviour. M1 to M6 are the six standard positions used by helical, parallel-shaft, bevel and worm units.
2026-09-11 · updated
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Technical guide
Most gearbox noise and vibration symptoms have mechanical, lubrication or alignment origins that can be diagnosed without disassembly if you read the symptom pattern correctly.
2026-09-11 · updated
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Technical guide
Gearbox overheating has thermal, mechanical or lubrication origins. The temperature-rise pattern, ambient temperature and oil condition together identify the most likely root cause within minutes.
2026-09-11 · updated
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Technical guide
Output torque is calculated from input power, output speed and gearbox efficiency using the standard 9550 formula. The common mistake is to skip the efficiency term on worm or right-angle units.
2026-09-11 · updated
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Replacement & custom
Separate interface measurement, performance targets, inspection, installation, commissioning and change control before ordering a replacement gearbox.
2026-08-22 · updated
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Application note
Agitator drive selection must consider impeller, shaft length, overhang, medium, liquid level and radial or axial loads, not motor power alone.
2026-08-21 · updated
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Technical guide
Plan planetary gearbox installation around coaxial connections, flanges, shaft loads, lubrication, cooling and service access.
2026-08-20 · updated
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Technical guide
Prepare power, speed, torque, shaft loads, duty, mounting, thermal conditions and interface data before selecting an industrial gearbox.
2026-08-19 · updated
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Technical guide
Check overload, frequent starts, lubrication, alignment, ambient cooling and motor electrical conditions when a geared motor runs hot.
2026-08-14 · updated
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Product guide
CHENGFA P-series planetary gearboxes suit coaxial, high-ratio and high-torque-density applications when heat, shaft loads and mounting are verified.
2026-08-14 · updated
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Technical guide
Select a worm gear reducer by torque, ratio, duty cycle, efficiency, thermal conditions, mounting direction, lubrication and shaft loads.
2026-08-13 · updated
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Product guide
CHENGFA H and B series gearboxes cover parallel-shaft and right-angle industrial drives selected by torque, shaft load, thermal duty and interfaces.
2026-08-13 · updated
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Technical guide
Compare coaxial R, parallel-shaft F, bevel-helical K and helical-worm S geared motors by shaft layout, duty and installation.
2026-08-12 · updated
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Technical guide
Compare high ratio, shock, frequent starts, efficiency, smooth running, mounting and maintenance before choosing cycloidal or helical gearing.
2026-08-12 · updated
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Quality & manufacturing
Confirm technical scope, quantity, inspection, packing, transport and change control before ordering to create a more reliable gearbox delivery plan.
2026-08-11 · updated
Read more →Quality & manufacturing
First-pass yield measures the proportion passing a defined inspection flow the first time; it does not replace order-specific dimensional or performance acceptance.
2026-08-11 · updated
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Product guide
CHENGFA supplies modular geared motors, cycloidal and worm reducers, H/B and DCY industrial gearboxes, P-series planetary gearboxes and mixer drives.
2026-08-10 · updated
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Technical guide
Prepare power, speeds, torque, ratio, duty, mounting, shaft loads, environment, quantity and delivery requirements for a more reliable gearbox quotation.
2026-08-09 · updated
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Replacement & custom
Before replacing a gearbox, verify its nameplate, shaft and mounting interfaces, actual duty, loads, lubrication, environment and acceptance criteria.
2026-08-08 · updated
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Product guide
Compare R/F/K/S geared motors, cycloidal and worm reducers, H/B and DCY industrial gearboxes, P-series planetary gearboxes and mixer drives by duty.
2026-08-07 · updated
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Company news
Review the machining resources, inspection stages, first-pass yield and on-time delivery definitions relevant to a gearbox supplier audit.
2026-08-06 · updated
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Company
Explore CHINFAR and CHENGFA R/F/K/S geared motors, cycloidal and worm reducers, H/B industrial gearboxes, P-series planetary gearboxes and mixer drives.
2026-08-05 · updated
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Application note
Screw diameter, motor power, output torque, thrust load and duty cycle are the core inputs for extruder gearbox selection.
2026-08-04 · updated
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Technical guide
Coaxial helical, parallel shaft, right-angle bevel and helical-worm configurations differ in space, ratio and torque characteristics.
2026-08-04 · updated
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Technical guide
The service factor converts catalog ratings into application ratings by load class and daily operating hours.
2026-08-04 · updated
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Technical guide
ZLYJ handles main-extruder torque and thrust; modular geared motors serve haul-off, conveying, mixing and feeding stations.
2026-08-01 · updated
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Technical guide
Provide screw diameter, input power and speed, ratio, torque, axial thrust, duty, lubrication, cooling and installation interfaces.
2026-07-30 · updated
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Application note
Use a HUIGUANG ZLYJ gearbox for the single-screw extruder main drive and select CHENGFA geared motors for feeding, mixing, haul-off and conveying.
2026-07-28 · updated
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Replacement & custom
Record the nameplate, feet, centre height, flanges, shafts, keyways, rotation, envelope and real duty to create retrofit inputs.
2026-07-26 · updated
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Technical guide
Check foundation, alignment, fasteners, oil, venting, direction, guards and low-load operation before commissioning an industrial gearbox.
2026-07-24 · updated
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Application note
Select an agitator drive using medium, viscosity, tank, impeller, speed, shaft length, duty, sealing and outdoor conditions.
2026-07-22 · updated
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Technical guide
Compare shaft arrangement, installation envelope, torque density, thermal duty, shaft loads, maintenance and interfaces.
2026-07-20 · updated
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Technical guide
Choose H series for parallel shafts and B series for right-angle layouts, then verify torque, thermal duty, shaft loads, mounting and maintenance.
2026-07-18 · updated
Read more →Explore R / F / K / S specifications, selection flow, installation & maintenance guides, cross-series comparisons and engineering knowledge.
5 technical pages
5 technical pages
5 technical pages
5 technical pages
6 comparison pages
10 technical guides
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