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Just-Fit Ball Reducer JFR series

A flange-type Ball Reducer with a thin output section.

Its dedicated integrated crossed roller bearing in the output shaft enables the machine to handle high loads despite its low profile.

This model is 30% to 50% thinner than the conventional Ball Reducer.

Technical Information
Just-Fit Ball Reducer JFR series

Highlights

Thin Design

Its output shaft support uses a thin crossed roller bearing to achieve a thin profile and meet the design’s space-saving requirements.

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

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.

Motor Attachment Standardization

The JFR 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 achieves a high-efficiency drive using a large number of steel balls.

Model

Thin Ball Reducer

JFR 1
60 2
S 3
C 4
A
15 5
A01 6
08 7
A 8
1.Product Name JFR series
2.Frame number 60,90,120
3.Output shaft shape

S:Shaft output

U:Flange output
4.Input shaft shape C:Clamp
5.Reduction ratio 10.5, 15, 20, 30, 40 (Frame number 90, 120 only)
6.Motor mounting code

Please refer to the dimensional drawing or the motor and reducer compatibility table.(Catalog: P10-16）
7.Input shaft hole diameter

Please refer to the specification table or external dimension drawing.(Catalog: P9-12）
8.Output shaft option （only for S type

A:Standard

B:With keyway

C:Tip tap

D:With keyway + Tip tap

Specifications

Model
JFR60 JFR90 JFR120
Reduction ratio
Rotation direction（Rotation direction of output shaft correlated to input shaft）
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
Recommendable motor capacity W
Inertia moment converted to input shaft Output shaft U-shaped type x10-4 kg･m2
Output shaft S-shaped type
Input shaft hole diameter mm
　 　 　
　 　 　
　 　 　
　 　 　
　 　 　
　 　 　
Outline drawing (U type, S type)
CAD Data
Catalog
Instruction Manual
10.5 15 20 30 10.5 15 20 30 40 10.5 15 20 30 40
Reverse Reverse Reverse
8.5 9.4 10.4 10.5 25.9 28.5 30.8 30.5 29 63.4 70 81.4 77.5 72.3
25.5 27.9 31.2 29.6 77.7 81 81.7 91.5 87 190.2 210 244.2 232.5 198.5
50 180 450
3000 3000 3000
4500 4500 4500
200 400 750
0.152 0.153 0.154 0.155 0.655 0.659 0.667 0.672 0.677 2.660 2.660 2.690 2.710 2.740
0.154 0.15 0.155 0.155 0.664 0.664 0.669 0.673 0.677 2.720 2.69 2.700 2.720 2.750
14 19 24
11 16 22
8 14 19
– 11 16
– 10 14
– 8 –

Ball Reducer Line-up

Reinformed Ball Reducer
SFP series
Product
Frame number
70,85,100,125
Reduction ratio
8 - 50
Acceleration peak torque（N･m）
20 - 173.6
Frame number

70,85,100,125

Reduction ratio

8 - 50

Acceleration peak torque（N･m）

20 - 173.6

Standard Ball Reducer
BR series
Product
Frame number
50,65,85,100,125,160
Reduction ratio
10 - 50
Acceleration peak torque（N･m）
9.8 - 176.5
Frame number

50,65,85,100,125,160

Reduction ratio

10 - 50

Acceleration peak torque（N･m）

9.8 - 176.5

Series List

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

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