ATRA-FLEX Catalog 2025

M-SERIES

SPACER COUPLINGS

* BODY LENGTH

FIGURE 4 SPACER FIGURE 18 SPACER

E

J1

J2

* BODY LENGTH

FIGURE 4 SPACER

E

J1

J2

d1

D1

D5

D2

D3

HD

d1

D1

D4

D5

D2

D3

DBSE

K

*SPACER BODY LENGTH IS ORDERED BY DISTANCE BETWEEN SHAFT ENDS (DBSE) SPACER BODY SHORTENED BY THE ā€œEā€ DIMENSION AT THE FACTORY *A-SERIES FLANGES ARE THE STANDARD FLANGE FOR MILLENNIUM SPACER COUPLINGS

DBSE

DIMENSIONS (IN INCHES) FOR Millennium SPACER COUPLINGS K

SIZE

M00M 0M 1M 2M 3M 4M 5M 6M 7 M8 M9 M10M 11 M12 2.1702 .840 3.860 4.820 5.750 7.600 9.700 11.800 13.600 15.460 17.860 19.875 23.030 27.600 1.000 1.3751 .750 2.250 2.500 3.3754 .500 5.500 6.000 7.250 9.000 10.000 11.000 13.250 0.8751 .3751 .8752 .250 2.8753 .3754 .000 5.000 5.750 7.125 8.250 10.500 11.000 14.250 3.875* 5.000* 6.875* 7.125* 8.875* 9.250* 11.875* 0.250 0.300 0.500 0.609 0.750 0.940 1.000 1.500 1.750 2.450 2.900 3.750 N/A 4.000 0.965 1.3751 .700 2.200 2.450 3.200 4.450 5.440 5.940 7.190 8.940 9.940 N/A 11.450 1.025 1.438 1.620 2.125 2.411 2.610 3.410 4.312 4.625 7.009 .100 11.100 9.812 11.625 1.600 2.200 2.8753 .500 4.000 5.500 6.500 8.000 9.000 10.500 12.000 14.000 N/A 18.500 1.700 2.400 3.150 3.900 4.900 6.400 8.180 9.930 11.800 13.940 15.900 17.870 19.650 23.850 2.500 3.415 3.940 4.710 5.515 6.950 8.860 10.000 10.490 12.800 15.087 19.000 17.900 23.900 1.350 2.280 2.358 3.500 4.200 5.00 6.625 7.250 8.275 10.000 11.875 13.000 14.000 18.000 1.088 1.3751 .562 1.940 2.315 2.548 3.350 4.250 4.500 7.000 9.000 11.000 9.750 11.500 1.000 1.3751 .750 2.250 2.500 3.250 4.500 5.500 6.000 7.250 9.000 10.000 11.00 11.500 0.035 0.035 0.050 0.050 0.050 0.050 0.060 0.060 0.060 0.060 0.060 0.060 0.060 0.020 0.020 0.060 0.060 0.060 0.060 0.060 0.060 0.060 0.100 0.100 0.100 0.125 0.125 0.720 1.145 1.5701 .600 2.150 3.100 3.500 3.900 5.150 6.280 6.530 6.650 N/A 9.200 .062 .075. 075. 075. 075. 200 .200 .200 .200 .200 .200 .250 N/A .250 1.390 1.390 1.560 2.065 2.350 2.550 3.350 4.252 4.565 6.900 9.000 11.000 11.500 1.000 1.375 1.750 2.250 2.500 3.250 4.500 5.500 6.000 7.250 9.000 10.000 11.500 0.035 0.035 0.050 0.050 0.050 0.050 0.060 0.060 0.060 0.060 0.060 0.060 0.060 1.000 1.375 1.750 2.250 2.500 3.375 4.500 5.500 6.000 7.250 9.000 10.000 13.250 1.375* 1.375* 1.875* 2.375* 2.875* 3.375* 4.000* 5.000* 5.750* 7.125* 8.250* 10.500* 14.250* 1.625* 1.625* 2.000* 2.500*3.000* 3.875* 5.000* 6.875* 7.125* 8.875* 9.250* 11.875* 0.250 0.300 0.430 0.410 0.625 0.940 1.000 1.500 1.750 2.400 2.900 3.750 4.000 M00 M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M12 2.260 2.940 3.960 4.700 5.730 7.600 9.700 11.800 13.600 15.850 17.860 19.875 27.600 M00M 0M 1M 2M 3M 4M 5M 6M 7 M8 M9 M10M 11 M12 2.1702 .840 3.860 4.820 5.750 7.600 9.700 11.800 13.600 15.460 17.860 19.875 23.030 27.600 1.000 1.3751 .750 2.250 2.500 3.3754 .500 5.500 6.000 7.250 9.000 10.000 11.000 13.250 0.8751 .3751 .8752 .250 2.8753 .3754 .000 5.000 5.750 7.125 8.250 10.500 11.000 14.250 3.875* 5.000* 6.875* 7.125* 8.875* 9.250* 11.875* 0.965 1.325 1.700 2.200 2.450 3.200 4.450 5.440 5.940 7.190 8.940 9.940 11.450 0.250 0.300 0.500 0.609 0.750 0.940 1.000 1.500 1.750 2.450 2.900 3.750 N/A 4.000 0.965 1.3751 .700 2.200 2.450 3.200 4.450 5.440 5.940 7.190 8.940 9.940 N/A 11.450 1.025 1.438 1.620 2.125 2.411 2.610 3.410 4.312 4.625 7.009 .100 11.100 9.812 11.625 1.600 2.200 2.8753 .500 4.000 5.500 6.500 8.000 9.000 10.500 12.000 14.000 N/A 18.500 1.700 2.400 3.150 3.900 4.900 6.400 8.180 9.930 11.800 13.940 15.900 17.870 19.650 23.850 2.500 3.415 3.940 4.710 5.515 6.950 8.860 10.000 10.490 12.800 15.087 19.000 17.900 23.900 1.350 2.280 2.358 3.500 4.200 5.00 6.625 7.250 8.275 10.000 11.875 13.000 14.000 18.000 1.088 1.3751 .562 1.940 2.315 2.548 3.350 4.250 4.500 7.000 9.000 11.000 9.750 11.500 1.000 1.3751 .750 2.250 2.500 3.250 4.500 5.500 6.000 7.250 9.000 10.000 11.00 11.500 0.035 0.035 0.050 0.050 0.050 0.050 0.060 0.060 0.060 0.060 0.060 0.060 0.060 1.450 1.450 1.620 2.125 2.410 2.610 3.410 4.312 4.625 7.000 9.100 11.100 11.625 1.600 2.200 2.875 3.500 4.000 5.500 6.500 8.000 9.000 10.500 12.000 14.000 18.500 1.700 2.400 3.150 3.900 4.900 6.400 8.180 9.930 11.800 13.940 15.900 17.870 23.850 3.415 3.415 3.940 4.710 5.515 6.950 8.860 10.000 10.490 12.800 15.087 19.000 23.900 2.280 2.280 2.875 3.500 4.200 5.00 6.625 7.250 8.275 10.000 11.875 13.000 18.000

SIZE DIMENSIONS (IN INCHES) FOR Millennium SPACER COUPLINGS

D1

SIZE

MAXIMUM BORE HUB

*MAXIMUM BORE FLANGE HUB

*MAX BORE HEAVY DUTY FLANGE

RSB

L1

L2

D2

D3

HD

D5 (HEAVY DUTY FLANGE USE HD)

J1

J2

F

3.5 0.020 0.020 0.060 0.060 0.060 0.060 0.060 0.060 0.060 0.100 0.100 0.100 0.125 0.125 0.720 1.145 1.5701 .600 2.150 3.100 3.500 3.900 5.150 6.280 6.530 6.650 N/A 9.200 .062 .075. 075. 075. 075. 200 .200 .200 .200 .200 .200 .250 N/A .250 3.0 3.5 3.75 3.0 3.5 3.75 5.0 6.0 7.0 0.680 1.030 1.550 1.635 2.040 3.100 3.500 3.900 5.150 6.280 6.530 6.650 9.200 0.060 0.060 0.060 0.060 0.060 0.060 0.060 0.060 0.060 0.100 0.100 0.100 0.125

3.5 3.75 5.0 5.25 5.5 7.0 7.25 7.5

4.0 5.0 6.0 7.0 9.5 9.75

H

12.0 TO 24.0

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

9.5 TO 20.0

3.0 3.5

4.0 5.0 5.5 7.0

7.25 9.75 10.0 12.0

K

4.0 4.5 5.0

3.5 3.75 5.0 5.25 5.5 7.0 7.25 7.5

E (GAP)

0.620 0.075 0.075 0.075 0.075 0.200 0.200 0.200 0.200 0.200 0.200 0.250 0.250

5.0 6.0 7.0

3.0 3.5 3.75

4.0 5.0 6.0 7.0 9.5 9.75

3.0 3.5 3.75

12.0 TO 24.0

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

9.5 TO 20.0

3.5 3.75 5.0 5.25 5.5 7.0 7.25 7.5

CUSTOM LENGTHS AVAILABLE WITH EXTRA CHARGE NOTE: Use Table 2 (page 4) Horsepower Capacity at Various RPM. 3.5 3.0 3.5

5.0 6.0 7.0

DROP OUT SPACER COUPLINGS TO CONVERT YOUR GREASE LUBRICATED GRID SPACER COUPLING TO A LOW MAINTENANCE ATRA-FLEX COUPLING AVAILABLE

3.0 3.5 3.75

4.0 5.0 5.5 7.0

7.25 9.75 10.0 12.0

4.0 4.5 5.0

3.0 3.5 3.75

4.0 5.0 6.0

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

12.0 TO 24.0

3.0 3.5

7.25 9.75 10.0 12.0

4.0 5.0 5.5 7.0

STANDARD BODY LENGTH

3.5

4.0 4.5 5.0

7.0 9.5 9.75

CUSTOM LENGTHS AVAILABLE WITH EXTRA CHARGE NOTE: Use Table 2 (page 4) Horsepower Capacity at Various RPM.

DROP OUT SPACER COUPLINGS TO CONVERT YOUR GREASE LUBRICATED GRID SPACER COUPLING TO A LOW MAINTENANCE ATRA-FLEX COUPLING AVAILABLE

Custom lengths available with extra charge. *A-Series flanges are the standard flange for M-Series spacer couplings.

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