ATRA-FLEX Catalog 2025

COUPLINGS ARE MADE TO ORDER

TITLE OF PAGE

SP A CE R COUPLINGS SPACER COUPLINGS

"E" DIMENSION

FIGURE 29 SPACER

L

J2

J1

max bore

HD D4

D2 max bore D3 D1

H

FIGURE 26 NON SPACER

"E"

D2

D3

D1

K

STANDARD FLANGE HUB

STANDARD HUB

K

G

Note: on Heavy Duty (maximum bore) hubs - D2 will be same as D3

SIZE

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A11

D1

2.480 3.150 4.255 5.550 7.000 8.900 10.625 12.400 14.650 16.925 20.000

MAXIMUM BORE HUB

1.250 1.625 1.9375 2.375 2.9375 4.000 5.000 6.000 7.125 9.250 10.500

MAXIMUM BORE FLANGE HUB

1.375 1.875 2.375 2.875 3.375 4.000 5.000 5.750 7.125 8.250 10.500

MAX BORE HEAVY DUTY FLANGE

1.625 2.000 2.500 3.000 3.875 5.000 6.875 7.125 8.875 9.250 11.875

RSB

0.300 0.430 0.500 0.625 0.950 1.000 1.500 1.750 2.450 2.900 3.740

d1

1.055 1.340 1.775 2.130 2.400 3.070 3.700 4.570 5.360 6.615 7.750

plings

d2

1.450 1.620 2.125 2.410 2.610 3.410 4.312 4.625 7.000 9.100 9.850

FIGURE 28 FLOATER BOLT

d3

1.365 1.750 2.325 2.900 3.340 4.150 4.940 5.940 6.940 7.940 9.940

J

J

H

D2

1.995 2.370 3.070 3.520 4.360 5.790 7.250 7.800 9.500 11.000 13.000

D3

2.065 2.505 3.360 4.505 5.872 7.450 9.250 10.490 12.800 15.087 17.900

D4 (HEAVY DUTY FLANGE USE HD)

2.280 2.875 3.500 4.200 5.000 6.625 7.250 8.275 10.000 11.875 14.000

D4

d1

D2 D3

HD

3.415 3.940 4.710 5.515 6.950 8.860 10.000 10.490 12.800 15.087 17.900

J1

1.365 1.750 2.385 2.960 3.400 4.210 5.000 6.000 7.000 8.000 10.000

ATER BOLT

J2

1.390 1.560 2.065 2.350 2.550 3.350 4.252 4.565 6.900 9.000 9.750

M

K

0.640 0.825 1.235 1.600 2.000 2.310 2.750 3.000 3.320 3.750 5.000

G

®

FLOATER

E (GAP)

0.062 0.062 0.062 0.062 0.188 0.188 0.188 0.188 0.188 0.219 0.100

A5 A6 A7 A8 A9 A11 8.750 10.750 12.250 14.375 16.835 8.61 10.19 12.19 14.19 16.22 20.10 4.00 5.00 6.00 7.13 9.25 10.50 1.13 1.50 1.75 2.45 2.90 3.74 3.07 3.70 4.57 5.36 6.17 7.75 3.35 4.45 5.25 5.93 7.35 7.75 5.79 7.25 7.80 9.50 11.00 13.00 7.45 9.25 10.49 12.80 15.09 17.90 3.93 4.69 4.99 5.99 6.41 9.10 2.34 2.75 3.60 4.10 4.91 5.50 3.300 4.000 4.625 5.100 5.600 0.188 0.188 0.188 0.188 0.219 0.100 67.68 115.00 175.00 308.00 456.00 770.00

3.5 3.75 5.0 5.25 5.5 7.0 7.25 7.5

3.0 3.5 3.75

5.0 6.0 7.0

4.0 5.0 6.0 7.0 9.5 9.75

3.0 3.5 3.75

7.0 TO 14.0

7.0 TO 18.0

7.5 TO 18.0

9.5 TO 18.0

9.5 TO 20.0

3.0 3.5

STANDARD BODY LENGTH

4.0 5.0 5.5 7.5

7.25 9.75 10.0 12.0

4.0 4.5 5.0

33

hts listed are approximate and sufficiently accurate for most users. act dimensions and weights are critical. e accuracy is required.

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