QRU

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Features

・Soft cushion type coupling.
・It corresponds to a mechanism with eccentricity and argument.
・It can also be used for rotation mechanism with vibration.

・There are two types of cushions, soft and hard, and can be replaced.

・Cushion is a synthetic rubber that can be insulated.

 qru 01

Configuration and materials

 

qru zu en

qru hinban en


・Key groove shape complies with new JIS standards.

Dimensions of key groove shape

qru key en
Hole diameter
d1,d2		KbtNominal dimension of keys
bxh
Basic dimen
sion		Tole
rance		Basic dimen
sion		Tole
rance
6-8 2 2 ±0.0125 1.0 +0.1
0		 2x2
8-10 3 3 1.4 3x3
10-12 4 4 ±0.0150 1.8 4×4
12-17 5 5 2.3 5×5
17-18 6 6 2.8 6×6

Dimensions

Item
No.		D 

Standard hole diameters ød1,ød2 H8

(left/right can be freely conbined)

d3LL1FA

M 

Fastening
torque
(N⋅m)
QRU16□ 16   4   5   6   7                                 8 18 6.4 2.7 5 2 0.6
QRU19□ 19       5   6   7   8                             10 21.2 7.6 2.7 6 2 0.6
QRU22□ 22           6   7   8   9   10                     11 24.5 8.8 3.5 7 2.5 1.1

QRU26□

 26           6   7   8   9   10   12                 13 29.5 10.5 4 9 2.5 1.3
QRU30□ 30               7   8       10   12   14             15 34 12 5 10.5 3 2.5
QRU35□ 35                   8   9   10   12   14       16     18 39 14 6.5 11.5 4 4.5
QRU40□ 40                           10   12   14   15   16   18 20 44.5 16 6.5 14 4 4.5

Specifications

Item

No.

Enbedded

cushion

Allowable torque

(N⋅m)

Maximum

Rotating speed

(rpm)

Torsional rigidity
(N⋅m/rad)

Allowable parallel

misalignment

(mm)

Radial rigidity

(N/mm)

Allowable angular

misalignment

(°)		Bending rigidity

(N･m/°)

Moment of inertia
(kg⋅m2)		Mass
(g)
QRU16S QR16S 0.25 2,000  10 0.3  105 3 0.4 3x10-7 7
QRU16H QR16H 0.6 4,000  15 0.2  230 2 0.8
QRU19S QR19S 0.4 2,000  14 0.4  120 3 0.6 7x10-7 11
QRU19H QR19H 0.9 4,000  25 0.2  240 2 1.2
QRU22S QR22S 0.6 2,000 17 0.4 140 3 0.9

1.4x10-6

 17
QRU22H QR22H 1.6 4,000 30 0.2 250 2 1.8
QRU26S QR26S 1 3,000 25 1.2 170 3 1.5 2.5x10-6 30
QRU26H QR26H 2 8,000 45 0.6 270 2 3.0
QRU30S QR30S 1.8 3,000 30 1.2 200 3 2.5 5.2x10-6 45
QRU30H QR30H 3.5 8,000 70 0.6 300 2 5.0
QRU35S QR35S 3 3,000 45 1.2 270 3 4.5 1.1x10-5 70
QRU35H QR35H 5.5 8,000 100 0.6 380 2 9.0
QRU40S QR40S 5 3,000 75 1.2 420 3 9.0 2.2x10-5 105
QRU40H QR40H 7.5 8,000  150 0.6  500

2

 16.0

・The eccentricity spring constant is not linear with respect to the amount of eccentricity, but is instead described by a quadratic curve. The values in the table are for an eccentricity reaction force of 10N.

・The declination spring constant is the value for the declination tolerance, and is also described by a quadratic curve.

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