Enhanced Ball Reducer SFP | Zero-Backlash Reducer

A Ball Reducer featuring increased allowable torque due to its improved cycloid curve in the torque transmission section, its allowable radial load has also been enhanced by using three-point support for its output shaft bearing.

Technical Information

Highlights

Improved Load Capacity

Boasts improved allowable radial load of the output shaft and enhanced rigidity, with every component upgraded based on the BR Series.

Zero-Backlash

Uses a steel ball in the deceleration mechanism instead of a gear. Eliminates backlash and enables prevision feeding and high-precision positioning through constant rolling contact via preload.

Compact & Simple

Has a reduction mechanism and input/output bearings built into its housing for compactness and ease of installation.

Motor Attachment Standardization

The SFP Series has standardized motor attachments for servo motors of various manufacturers, allowing the motor to be immediately installed after purchase.

Maintenance-free

Its grease-filled reducer can be used without lubrication for its entire rated life. Also has no mounting position restrictions.

High Efficiency

Its transmission mechanism uses a large number of steel balls to achieve a high-efficiency drive. The rolling contact of the balls is similar to that of a ball screw, allowing extremely light operation and maximized capacity of any motor.

Roller Pinion

SFP	1
70	2
S	3
C	4
A
10	5
A01	6
08	7
16	8
0
0
A	9
0	10

1.Product Name	SFP series
2.Frame number	70,85,100,125
3.Output shaft shape	S:Shaft output
4.Input shaft shape	C:Clamp
5.Reduction ratio	8 (70 only), 10, 20, 30, 40, 50 (125 only)
6.Motor mounting code	Please refer to the dimensional drawing or the motor and reducer compatibility chart.(Catalog: P20-21, 23-25）
7.Input shaft hole diameter	Please refer to the specification table or dimensional drawing.(Catalog: P19-21）
8.Output shaft diameter	16(70 only),20(85 only),25(100 only),30(125 only)
9.Output shaft option	A:Standard B:With keyway C:Tip tap D:With keyway + Tip tap
10.Mounting plate	F:Available 0:None

Specifications

Model

SFP70SCA				SFP85SCA				SFP100SCA				SFP125SCA

Reduction ratio
Rotation direction（Rotation direction of output shaft correlated to input shaft）
Allowable rated torque	N･m
Acceleration peak torque	N･m
Maximum instantaneous torque	N･m
Allowable radial load at output shaft *1	N
Allowable thrust load at output shaft *1	N
Allowable average number of input revolutions	rpm
Max input rpm	rpm
Inertia moment converted to input shaft	x10^-4 kg･m²
Recommendable motor capacity	W
Input shaft hole diameter	mm





Outline Drawing
CAD Data
Catalog
Instruction Manual

8	10	20	30	10	20	30	40	10	20	30	40	10	20	30	40	50
Reverse		Forward		Reverse	Forward			Reverse	Forward			Reverse	Forward
10	11	12	12.8	25.5	28.4	26.2	26	48.8	56	56	56	90	96.5	96.5	98.8	99.2
20	21.2	22	22.6	42	48.3	44.6	44.2	78	89.4	95.2	95.2	155	168.9	168.9	172.9	173.6
40				70	85			130	160			240	270
500				1000				1500				2000
200				400				600				1000
3000				3000				2000				2000
4500				4500				4000				4000
0.149	0.149	0.159	0.161	0.484	0.431	0.414	0.406	1.58	1.43	1.38	1.36	3.45	2.98	2.86	2.81	2.78
200	200	100	100	400	200	200	100	750	400	400	200	1500	750	750	400	400
14				14				19				24
11				11				16				22
8				8				14				19
–				–				11				16
–				–				–				14
PDF				PDF				PDF				PDF
CAD
PDF
PDF

Ball Reducer Line-up

Just-Fit Ball Reducer
JFR series

Frame number

60,90,120

Reduction ratio

10.5 - 40

Acceleration peak torque（N･m）

25.5 - 244.2

Standard Ball Reducer
BR series

Frame number

50,65,85,100,125,160

Reduction ratio

10 - 50

Acceleration peak torque（N･m）

9.8 - 176.5

Series List

Reinformed Ball Reducer SFP series