WFH Series Hollow Shaft High Precision Gearbox Reducers-Fubao Mechanical

WFH series reducer

WFH series high precision reduction gears with through holes in the shafts, also known as hollow-shaft version.

Cables, tubes with compressed air, drive shafts etc can be led via the through holes in the shaft of the gear.

WFH series is completely sealed and are filled with grease for its lifetime. WFH series high precision reduction gears consist of an accurate reduction mechanism and high-capacity radial and axial cylindrical bearings.

This design of reduction gears allows the mounting of the load directly to the output flange or case without requiring additional bearings.

Advantages of WFH series reducer

High torque
High rigidity
High-precision
Small volume
High speed ratio
Big hollow

Characteristics of WFH series reducer

WF Series Features
Case	a. threaded holes in case b. threaded and through holes in case
Input shaft design	Input shaft offers following versions: a. shaft with key-way b. according to special request
Installation and operation characteristics	A wider range of modular configurations

Ordering specifications of WFH series reducers

WFH	17	51	A	B
Name	Size	Ratio	Input	Output
WFH	11	Reference rating table	a. Key input b. Hold on to input	a. Axis output b. Flange output
	17
	25
	32
	40

Rating table of WFH series reducer

Size	Reduction ratio		Rated Output Torque	Opening and stopping allowable moment	Instantaneous admissible moment	Reted input speed	Max input speed	Inclination stiffness	Torsional stiffness	No-load startup moment	Driving Accuracy	Backlash accuracy	Inertial moment	Weight
	Axis rotation	Shell Rotation	Nm	Nm	Nm	rpm	rpm	Nm/arcmin	Nm/arcmin	Nm	arcmin	arcmin	Kg-m²	Kg
WFH07	21	20	15	30	45	3000	6000	6	1.1	0.12	P1≤±1 P2≤±3	P1≤±1 P2≤±3	0.52	0.42
WFH07	41	40	15	30	45	3000	6000	6	1.1	0.11	P1≤±1 P2≤±3	P1≤±1 P2≤±3	0.47	0.42
WFH17	21	20	50	100	150	3000	6000	28	6	0.21	P1≤±1 P2≤±3	P1≤±1 P2≤±3	0.88	0.85
	41	40								0.18			0.72
	61	60								0.14			0.69
WFH25	21	20	110	220	330	3000	5500	131	24	0.47	P1≤±1 P2≤±3	P1≤±1 P2≤±3	6.12	2
	31	30								0.41			5.67
	41	40								0.38			4.9
	51	50								0.35			4.56
	81	80								0.31			4.25
WFH32	25	24	190	380	570	3000	4500	240	35	1.15	P1≤±1 P2≤±3	P1≤±1 P2≤±3	11	4.2
	31	30								1.1			10.8
	51	50								0.77			9.35
	81	80								0.74			8.32
	101	100								0.6			7.7
WFH40	25	24	320	640	960	3000	4000	377	50	1.35	P1≤±1 P2≤±3	P1≤±1 P2≤±3	13.2	6.6
	31	30								1.32			12.96
	51	50								0.92			11.22
	81	80								0.81			9.84
	121	120								0.72			8.4

Notes: Medium speed ratio "italics, thickening" is the commonly used speed ratio, other speed ratios can be booked.

Right to change without prior notice reserved!

WFH series reducer drawings

WFH11 Hollow Planetary Circular Gear Reducer

WFH17 Hollow Planetary Circular Gear Reducer

WFH25 Hollow Planetary Circular Gear Reducer

WFH32 Hollow Planetary Circular Gear Reducer

WFH40 Hollow Planetary Circular Gear Reducer

General information of reducer

The Fubao high precision reduction gears are based on a new reduction mechanism and a new design of a radial-axial output bearing. As a result,they represent a new generation of power transmission systems. This new transmission concept allows the use of the Fubao reduction gear directly in robot joints, rotary tables, and wheel gears in various transport systems.

Fubao high precision reduction gears are designed for applications requiring a high reduction ratio, high kinematic accuracy, low lost motion, high moment capacity and high stiffness of a compact design with a limited installation zone, and low mass.

Operating principle of RV reducer

Smallest outer diameter size φ=40mm

Fubao precision reducer

The basic parts of FubaoDRIVE high precision reduction gear are show in Fig.

Case of reducer

At the same time incorporates the high capacity precision radial, axial output bearing integrated in the reduction gear.
Flanges of reducer

Input and out put flanges are fixed together by pin shafts, and rotate at reduced speed in the radial-axial output bearing relative to the case.
Input shaft

High-speed member of the reduction mechanism carried by bearing in the flanges. The shaft eccentrics rotationally support the trochoidal gears viabearings.
Trochoidal gears

Their almost 50% simultaneously meshing trochoidal teeth transmits a very high torque which ensures powerful and ensure the performance and accuracy of the reduction gear.

Functional advantages of RV reducer

Micro-structure

By adopting differential deceleration mechanism and thin cross roller bearing, Achieving ultra-flat shape and contributing to compact size of equipment. Small size and unparalleled excellent parameters are combined to achieve the best ratio of performance, price and size.
Exceptional precision

Complex meshing through precision hypocycloid gears and high precision hobbing, achieving higher transmission accuracy. At the same time, small size and large speed ratio are maintained
High rigidity

Increase meshing rate and disperse load, so rigidity is very high.
High overload capacity

Excellent parameters of tilting and torsional stiffness at the same time with keeping of trouble-free operation under exceptionally low noise and low vibrations. Relyon high resistance and overload capacity of reduction gear with integrated radial-axial bearings that is guaranteed to you by us at various temperature ranges of application environment.
Easy installation of motor

It can be installed directly for any brand of motor without adding any device
Maintenance free

Seal in grease to achieve maintenance-free. Don't need to add lubricating grease later, no installation direction restriction.
Technical support

Our professional team of experts is ready to solve any problems for you. The manufacturing process of high wear resistant materials and high precision parts is certified by lSO9000 quality system, which is also the basic premise for reliable operation of products.

Installation process of RV reducer

Before the installation, it is desirable to wipe off the protective oil film from the surface of the reduction gear by a clean and dry clothContact surfaces of friction joints must be degreased prior to the installation.

When cleaning, make sure that the degrease doesn't get into the reduction gear.

During the installation, proceed with following steps:

First, fasten a coupling to the reduction gear, then the connecting flange, to which mount the motor and then bolt the whole assembly to the frame.

Reduction gear is most often used in combination with a pre-stage, which may comprise gears or toothed belt drives. The driven pulley is attached to the shaft of the reduction gear with screws which have to be tightened with a tightening torque according.