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Standard Ball Reducer BR series

The standard Ball Reducer model.

Its reduction mechanism uses steel balls in the meshing section to achieve Zero-Backlash, high efficiency, and low noise.

Technical Information
product_br_210901

Highlights

Supports a Wide Range of Designs

Features a wide variety of output and input shaft shapes to flexibly meet various design needs.

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.

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.

Model

Ball Reducer (Input Shaft Type)

BR 1
50 2
S 3
S
10 4
G 5
1 6
A 7
X 8
1.Product Name BR series
2.Frame number 50, 65, 85, 100, 125, 160
3.Output shaft shape

S: Shaft output

U: Flange output (KU for BR100 and 125 only)
4.Reduction ratio

BR50: 10, 15, 18

BR65: 10, 15, 20

BR85: 10, 15, 20, 30

BR100: 10, 20, 30, 40

BR125: 10, 20, 30, 50

BR160: 10, 20, 30, 50
5.Rotational Direction

G: Rev.

S: Fwd. 

*Rotational direction of the output shaft relative to the input shaft rotational direction
6.Output shaft option code

No Code: No setting

For Shaft Output (S):

1: Keyless, 2: Keyway+tip tap, 3: ”D”-cut, 4: ”D”-cut+tip tap

For Flange Output (U):

5: Keyway+keyway tolerance P9, 6: Keyway+keyway tolerance Js9
7.Input shaft option code

No Code: No setting

A: Keyless

B: Keyway+tip tap

C: ”D”-cut

D: ”D”-cut+tip tap

G: Short-length type for a coupling（A coupling sold separately）
8.Other option code

No Code: No setting

X: Drill-throu-hole housing
Noted; Product name that include the "S + 3 digit" number is special order product. So please note that we cannot sell it to customers who have not purchased same product before.

Ball Reducer (Input Shaft Type)

BR 1
50 2
U 3
H
10 4
G 5
7 6
K 7
2 8
5 9
E 10
X 11
1.Product Name BR series
2.Frame number 50, 65, 85, 100, 125, 160
3.Output shaft shape

S: Shaft output

U: Flange output (KU for BR100 and 125 only)
4.Reduction ratio

BR50: 10, 15, 18

BR65: 10, 15, 20

BR85: 10, 15, 20, 30

BR100: 10, 20, 30, 40

BR125: 10, 20, 30, 50

BR160: 10, 20, 30, 50
5.Rotational direction of output shaft

G: Rev.

S: Fwd.

*Rotational direction of the output shaft relative to the input shaft rotational direction
6.Input bore size

Please refer to the hole input type dimensions.
7.Input Fastening Method

K: Key holding

T: Tap holding

W: Key and tap holding 
8.Key Width Dimensions

Please refer to the key groove dimension table.
9.Output shaft option code

No Code: No setting

For Shaft Output Axis (S)…

1: Keyless, 2: Keyway+tip tap, 3: ”D”-cut, 4: ”D”-cut+tip tap

For Flange Output (U)…

5: Keyway+keyway tolerance P9, 6: Keyway+keyway tolerance Js9
10.Input shaft option code

No Code: No setting

E: Keyway+keyway tolerance Js9
11.Other option code

No Code: No setting

X: Drill-throu-hole housing
Noted; Product name that include the "S + 3 digit" number is special order product. So please note that we cannot sell it to customers who have not purchased same product before.

Specifications

Model
　
　
Reduction
ratio		 Rotational
Direction		 Allowable rated
torque (N･m)		 Acceleration peak
torque (N･m)		 Max. Instantaneous
torque (N･m)		 Allowable average number
of input revolutions (rpm)		 Max.Input rpm (rpm) Moment of inertia at Input
shaft (x10-4 kg･m2)		 At end of output shaft At end of input shaft Mass weight (kg) Outline Drawing
Allowable radial load (N) Allowable thrust load (N) Allowable radial load (N) Allowable thrust load (N) U type S type U type S type
BR50
　
　
　
BR65
　
　
　
BR85
　
　
　
　
BR100
　
　
　
　
BR125
　
　
　
　
BR160
　
　
　
　
10 Reverse 3.9 9.8 19.6 2400 3000 0.021 29 79 49 29 0.36 0.4 PDF PDF
15 Forward 3.9 9.8 19.6 0.018
18 3.9 9.8 19.6 0.017
10 Reverse 7.8 14.7 29.4 2400 3000 0.053 98 294 49 49 0.7 0.9 PDF PDF
15 7.8 14.7 29.4 0.048
20 6.9 12.7 25.5 0.043
10 Reverse 19.6 37.3 73.5 2400 3000 0.19 294 588 108 74 1.45 1.8 PDF PDF
15 17.7 33.3 65.7 0.16
20 15.7 29.4 58.8 0.15
30 Forward 14.7 27.5 54.9 0.14
10 Reverse 34.3 58.8 117.7 2300 3000 0.65 490 981 147 98 3.0 3.6 PDF PDF
20 31.4 53 105.9 0.52
30 24.5 42.2 82.4 0.5
40 24.5 41.2 83.4 0.44
10 Reverse 68.6 117.7 235.4 2200 3000 1.81 785 1471 186 147 4.9 6.4 PDF PDF
20 68.6 117.7 235.4 1.4
30 51 86.3 172.6 1.28
50 44.1 74.5 150 1.17
10 Reverse 98.1 176.5 353 2000 2500 5.2 981 1961 441 294 10.5 14.2 PDF PDF
20 98.1 176.5 353 4.07
30 94.1 168.7 338.3 3.61
50 62.8 112.8 225.6 3.33

Ball Reducer Line-up

Just-Fit Ball Reducer
JFR series
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

Reinformed Ball Reducer
SFP series
Reinformed Ball Reducer SFP series
Frame number

70, 85, 100, 125

Reduction ratio

8 - 50

Acceleration peak torque （N･m）

20 - 173.6

Series List

Please feel free to contact us for product information and technical consultation.

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