Just-Fit Ball Reducer JFR series (Shaft Output/Flange Output)

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

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.

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
Inertia moment converted to input shaft	Output shaft S-shaped type	x10^-4 kg･m²
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					–
PDF　PDF				PDF　PDF					PDF　PDF
CAD
PDF
PDF

Ball Reducer Line-up

Reinformed Ball Reducer
SFP series

Frame number

70,85,100,125

Reduction ratio

8 - 50

Acceleration peak torque（N･m）

20 - 173.6

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

Just-Fit Ball Reducer JFR series