Precision transmission

KOFON
Choose the configuration.
Then check the motion.

KOFON develops and manufactures precision transmission components in Huanggang, Hubei. Its FG090 planetary gearbox gives a useful starting point for servo selection: three configurations share a frame, but differ in backlash, acceleration capacity and lubrication.

Compare FG090 configurations Official company profile ↗

One frame · one ratio

FG090 at i = 5: three configurations, not one headline rating.

The official table separates the ultra-precision P0, precision P1 and load-type Z. Compare these single-stage entries together, then send the intended motion cycle for selection.

FG090, single stage, i = 5	P0 · ultra-precision	P1 · precision	Z · load type
Nominal output torque	80 Nm	80 Nm	92 Nm
Maximum acceleration torque	150 Nm	130 Nm	150 Nm
Torsional backlash	≤1 arcmin	≤3 arcmin	≤3 arcmin
Lubrication	Oil	Grease	Oil

Source: official FG090 technical tables. Published conditions include 20°C ambient temperature. The general product description discusses oil lubrication; the configuration table specifically identifies P1 as grease-lubricated. Confirm the ordered configuration in the quotation and installation instructions.

For repeated direction changes

P0 offers the tighter published single-stage backlash, while P1 at this ratio has the same nominal torque and a lower acceleration limit. Share reversals, acceleration time, payload and holding requirements. A backlash limit alone does not establish machine positioning accuracy.

For a load-led selection

Z carries a higher nominal torque at the same ratio, with the listed ≤3 arcmin backlash. Specify whether torque comes from steady processing, acceleration or a stop event; the 150 Nm acceleration value is not a continuous operating rating.

Changing the ratio changes the comparison.

In the same FG090 table, single-stage i = 10 has nominal torques of 60 Nm for P0/P1 and 69 Nm for Z. Two-stage i = 20 has 100 Nm for P0/P1 and 115 Nm for Z, with backlash limits of ≤1.5 arcmin for P0 and ≤5 arcmin for P1/Z. Those entries do not inherit the single-stage i = 5 backlash or acceleration figures.

The published permitted average input speed is 3,000 rpm and maximum input speed is 6,000 rpm. They are different limits. Include the time spent at each input speed, the thermal environment and the load cycle when requesting approval for continuous or intermittent operation.

Pulley · pinion · sprocket

Torque is only part of the output-shaft check.

KOFON describes an integrated cage-type carrier/output shaft and high-load tapered roller output bearings. Its application description includes externally mounted synchronous pulleys, gears and sprockets. The supplier still needs the force and its position.

Official table entry, i = 5	Published value
Permitted radial load	2,545 N
Permitted axial load	2,291 N
Maximum radial load	7,000 N
Maximum axial load	6,300 N
Maximum tilting moment	210 Nm

The permitted-load footnote specifies 100 rpm output speed and force applied at the shaft midpoint, L/2. The separate maximum-load entries are not substitutes for these permitted values. Ask for a combined-load and life check for your actual load position.

For a belt drive, provide pulley diameter, belt pretension, working tension and overhang. For a pinion or sprocket, include pitch geometry and the force direction. If axial force and radial force act together, submit both in the same load case rather than selecting each limit independently.

Transmission components from a Huanggang manufacturing base.

KOFON's official company profile places the business at No. 9 Zhongliang Avenue, Huangzhou District. Its 2023 application-draft prospectus independently records the same legal entity and address.

Manufacturer's company-profile image. It shows the campus; it is not a production inspection or a capacity measurement.

Machining and gear inspection

The company describes CNC turning, machining centers, gear shaping, gear grinding, broaching and an automated heat-treatment line. It also lists Gleason and Klingelnberg gear inspection equipment and Zeiss coordinate measurement. For an order, ask which process and inspection records apply to the selected gears and assembly.

More than a standalone reducer

The published portfolio includes planetary and harmonic reducers, ball and planetary roller screws, servo electric cylinders and electromechanical motion products. Its listed application areas include robotics, laser cutting, logistics, packaging and machine tools. Use the application to define the component boundary and motor interface.

The 2023 prospectus is an application draft, not evidence of a completed stock listing or a current certification. Here it supports the historical company identity and address. Manufacturing descriptions come from the current official site; the selected product's inspection and acceptance requirements belong in the purchase specification.

Describe one complete move before asking for a frame size.

A useful servo enquiry lets the supplier see acceleration, running, deceleration and holding as separate parts of one cycle.

Cycle and output load

Give move distance or angle, move time, cycles per minute, driven inertia and the torque-versus-time profile. Identify the working load, acceleration peaks, reversing events and exceptional stops. State whether a brake or an independent holding mechanism is required.

Motor and connection

Send the exact servo motor model and flange/shaft drawing, including pilot, bolt circle, shaft diameter, key or clamp interface and shaft engagement. Include the required output connection and mounting position; “90 frame” is not a complete interface definition.

Accuracy and stiffness

Specify the allowable output positioning error under load, direction reversals and temperature. Ask how backlash is measured and what load is used for the stiffness test. Include coupling compliance and the rest of the transmission in the machine accuracy budget.

Environment and acceptance

Identify ambient temperature, dust or washdown exposure, running hours and service access. Agree the required sealing and lubricant for the selected configuration. Define the unit-linked backlash, running and inspection records to be supplied with the order.

The i = 5 row lists 61 dB(A), with the source footnote stating 3,000 rpm input speed and measurement at 1 m. Treat it as that documented measurement condition, not a noise promise for a different machine installation.

Ask KOFON for a configuration tied to your machine.

Use the grade comparison as a starting point and include the full motion and output-support loads.

Prepare sourcing request

Save KOFON to include it in your request.

Application, axis function, quantity and destination; selected series, ratio and P0/P1/Z preference.
Motor model and connection drawings; input speed/time profile and required output speed.
Nominal working torque, acceleration/deceleration peaks, stop events, inertia and complete cycle.
Pulley/pinion/sprocket dimensions, force directions, axial/radial loads and overhang.
Backlash and loaded positioning requirements, mounting position, temperature and lubrication.
Approved assembly drawing, calculation basis, inspection records and machine acceptance criteria.

Sources & review

Reviewed 8 October 2026. Values retain the official model, ratio and load definitions. Selection questions are editorial guidance.

KOFON · official company profile ↗Legal name, establishment, location, manufacturing descriptions, product scope and campus image.
KOFON · FG090 official product page ↗P0/P1/Z technical tables, single/two-stage comparison, speed, load-position and noise footnotes; official product image.
Shanghai Stock Exchange · KOFON 2023 application-draft prospectus ↗Cover: legal entity, English name and Zhongliang Avenue address. Historical identity evidence, not an approval or listing claim.
GearboxSourcing · existing FG090 product specifications →Related product entry; no new product URL created for this profile upgrade.