MBSA

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Features

・New coupling that incorporates tolerance endplay function like a universal joint.
・Simple construction-composed of three elements : an outer hub, an inner hub(Stainless steel), and multiple balls.
・No splashing even at high speed, thanks to the use of special high-viscosity grease.
・Compact, with high-strength, making it suitable for miniaturization of mechanisms.

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Configuration and materials

 

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Assembly: 

Example Application

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The left side shaft is thicker than the screw diameter, and the end is a screwed-in plug.

On the right side the shaft end has a tap hole.

 

Note:

・Fix the shaft-coupling component using a strong adhesive, such as “Loctite”.
・Strong high-viscosity grease is applied to the ball joint.

Dimensions

Item
No.		D LBCEGF

W

Spanner

groove

M 

Fastening
torque
(N⋅m)
MBSA4
 4 12 5 2.7 6.5 4.5 1.5 3.2 2 0.2
MBSA5
 5 15.5 6.2 3.5 8 6 2 4 3 0.6
MBSA6 6 16.8 6.8 4 9 6 2.5 5 3.5 1.2
MBSA7 7 20.5 8 4.5 10.5 8 2.5 6 4

2.5

Specifications

Item No.

Roted torque

(N⋅m)

Maximum rotating speed

(rpm)

Torsional rigidity
(N⋅m/rad)

Back lash

(deg. MAX)

Allowable angular misalignment

(°)

Allowable end play

(mm)

Moment of inertia
(kg⋅m2)

Mass

(g)

MBSA4 0.13 2,000 11 2 15 ±0.8 1.0x10-9 0.5
MBSA5 0.3 2,000 25 2 15 ±0.8 3.1x10-9 1
MBSA6 0.5 2,000 40 1.5 15 ±1.0 7.2x10-9 2
MBSA7 0.8 3,000 65 1.5 15 ±1.5 2.0x10-8 3

*1. Rated torque is for angular misalignment≦5°. At 10°, it will be approx.2/3 the value; at 15°approx.1/2.
*2. Maximum rotating speed is for angular misalignment≦5°. At 10°, it will be approx.1/2 the value; at 15°approx.1/3.
*3. Allowable end play is for angular misalignment≦5°. At 10°, it will be approx.1/2 the value; at 15°approx.1/3.

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