FSPJU

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Features

・The very best coupling.
・Stainless steel hubs and aluminum-bronze slider:all-metal Oldham's coupling.
・Minimally-sized slider gap covered with a high viscosity resin grease to prevent seizure and eliminate backlash.

・Not damaged even by impact torques four times greater than the torque tolerance.

 fspju 01

Configuration and materials

 

fspju zu en

fspju hinban en


・Key groove shape complies with new JIS standards.

Dimensions of key groove shape

fspju key en
Hole diameter
d1,d2		KbtNominal dimension of keys
bxh
Basic dimen
sion		Tole
rance		Basic dimen
sion		Tole
rance
15-17 5 5 ±0.0150 2.3 +0.1
0		 5x5
17-22 6 6 2.8 6×6
22-30 8 8 ±0.0180 3.3 +0.2
0		 8x7

Dimensions

Item
No.		D 

Standard hole diameters ød1,ød2 H8

d3LL1F

Clearance

of the sliding

surface

M 

Fastening
torque*
(N⋅m)
FSPJU44  44   15   16   18   20                                 22.5 46 16.2 6 0.015-0.03 5 10
FSPJU55 55               20   22   24   25                     29 57 20.8 7 0.02-0.035 6 15

* FSPJU couplings require key groove processing.

* Always indicated the hole diameter and key groove dimensions.

Specifications

Item

No.

Rated torque

(N⋅m)

Maximum

Rotating speed

(rpm)

Allowable parallel

misalignment

(mm)

Allowable angular

misalignment

(°)

Allowable

end play

(mm)

Torsional rigidity
(N⋅m/rad)		Moment of inertia
(kg⋅m2)		Mass
(g)
FSPJ44 50 5,000 0.8 0.5 0.3 35,000 1.8x10-4 450
FSPJ55 70 5,000 1.0 0.5 0.5 52,000 3.3x10-4 800

1. The above specifications are for an envisioned lifespan of approximately 108, and tolerance values are for isolated use. In the event of compound    

    misalignment, torque margines must be increased based on the number of elements and the degree of misalignment.

2. Torque tolerance values are for an envisioned rotation speed of 3000rpm and eccentricities and declinations of 1/3 of their respective tolerances.

    Inoptimal operating conditions rotation speeds of up to 6000rpm can be used.

3. In usage environments in which eccentricity, torque, or rotation speed exceed 50% of their respective tolerances, regularly apply grease to prevent

    seizure and abnormal abrasion.

4. This coupling is a high-precision, high-rigidity coupling, so the parallelism of the shaft is especially important. If there is declination then evry 90°

    there will be rotation resistance, producing rotationalvibration and noise.

5. The amount of ecentricity must also be kept at a minimum for high-speed rotation.

 

 

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