Flexible Couplings

Nook ActionJac™ Worm Gear Screw Jacks and Electric Cylinders used alone or in multiple arrangements require couplings to transmit power to the input shaft. Nook Industries provides jaw type and flex type couplings for use with jacks. The selection process for couplings includes the following steps:

  1. Refer to the jack specification tables below to determine torque requirements per jack for your application.
  2. Determine total coupling capacity required by multiplying the torque required per jack by the number of jacks to be driven by the coupling.
  3. Check the torque required against maximum torque rating as shown in the table. Select a coupling with a maximum torque greater than the application torque.
  4. If using flex type couplings, full-flex couplings should be used for close coupled arrangements. For floating shaft applications, use two Flex-Rigid couplings. The rigid half should be mounted on the floating shaft.

All jacks, shafts, couplings and motor should be carefully aligned for maximum performance. Couplings with bores other than those specified are available upon request.

Please refer to all charts below and Images 1-3 in Figure 1 Below for product specifications and diagrams.

Jawtype Series

Table 1

Coupling Dimensions (in) Bore Sizes (in)
Product Code Max Torque Rating (in-lb) Approx. Wt. (lb) Clamp Bolt Torque (in-lb) A B E F G H J Keyway K L Keyway M
C-3020-01 111 0.10 12 1.38 1.18 0.43 0.51 1.27 0.45 0.375 - 0.375 -
C-3025-01 150 0.30 93 2.60 1.57 0.98 0.63 1.81 0.57 0.500 18 x 116 0.500 18 x 116
C-3025-05 150 0.30 93 2.60 1.57 0.98 0.63 1.81 0.57 0.500 18 x 116 0.625 18 x 116
C-3025-02 150 0.30 93 2.60 1.57 0.98 0.63 1.81 0.57 0.500 18 x 116 0.57 316 x 332
C-3025-03 150 0.30 93 2.60 1.57 0.98 0.63 1.81 0.57 0.625 18 x 116 0.625 18 x 116
C-3025-04 150 0.30 93 2.60 1.57 0.98 0.63 1.81 0.57 0.625 18 x 116 0.750 316 x 332
C-3025-06 150 0.30 93 2.60 1.57 0.98 0.63 1.81 0.57 0.750 316 x 332 0.750 316 x 332
C-3030-01 531 0.62 93 3.07 2.17 1.18 0.71 2.26 0.79 0.750 316 x 332 1.000 14 x 18
C-3030-02 531 0.62 93 3.07 2.17 1.18 0.71 2.26 0.79 1.000 14 x 18 1.000 14 x 18

Heavy Duty Series

Table 2

Product Code Coupling Dimensions (in) Bore Sizes (in)
Full Flex Flex-Rigid Max Torque Rating (in-lb) Approx. Wt. (lb) A B C D E F J Keyway K L Keyway M
C-1800-04 C-1805-04 2,500 5 3.125 3.125 2.00 2.00 1.50 0.125 .4995 18 x 116 .7495 316 x 332
.4990 .7490
C-1800-01 C-1805-01 2,500 5 3.125 3.125 2.00 2.00 1.50 0.125 .4995 18 x 116 .9995 14 x 18
.4990 .9990
C-1800-05 C-1805-05 2,500 5 3.125 3.125 2.00 2.00 1.50 0.125 .7495 316 x 332 .7495 316 x 332
.7490 .7490
C-1800-02 C-1805-02 2,500 5 3.125 3.125 2.00 2.00 1.50 0.125 .7495 316 x 332 .9995 14 x 18
.7490 .9990
C-1800-03 C-1805-03 2,500 5 3.125 3.125 2.00 2.00 1.50 0.125 .9995 14 x 18 .9995 14 x 18
.9990 .9990
C-1810-01 C-1815-01 7,500 8 3.75 3.75 2.53 2.375 1.82 0.125 1.2495 14 x 18 1.2495 14 x 18
1.2490 1.2490
C-1810-02 C-1815-02 7,500 8 3.75 3.75 2.53 2.375 1.82 0.125 1.3745 516 x 532 1.2495 14 x 18
1.3740 1.2490
C-1810-03 C-1815-03 7,500 8 3.75 3.75 2.53 2.375 1.82 0.125 1.4995 38 x 316 1.2495 14 x 18
1.4990 1.2490

Economy Series

Table 3

Product Code Coupling Dimensions (in) Bore Sizes (in)
Full Flex Flex-Rigid Max Torque Rating (in-lb) Approx. Wt. (lb) A B C D E F J Keyway K L Keyway M
P-2200-185 - 210 0.37 2.13 1.89 1.46 1.26 0.98 0.16 0.500 18 x 116 0.750 316 x 332
P-2200-193 - 210 0.37 2.13 1.89 1.46 1.26 0.98 0.16 0.625 316 x 332 0.750 316 x 332
P-2200-196 - 260 0.71 2.2 2.05 1.61 1.42 1.02 0.16 0.625 316 x 332 0.750 316 x 332
P-2200-178 - 210 0.37 2.13 1.89 1.46 1.26 0.98 0.16 0.750 316 x 332 0.750 316 x 332
P-2200-182 - 260 0.71 2.2 2.05 1.61 1.42 1.02 0.16 0.750 316 x 332 0.750 316 x 332
P-2200-183 - 610 1.64 3.31 2.6 1.81 1.73 1.57 0.16 0.750 316 x 332 1.000 14 x 18
P-2200-191 - 610 1.64 3.31 2.6 1.81 1.73 1.57 0.16 0.750 316 x 332 1.125 14 x 18
P-2200-177 - 1,170 3.31 3.46 3.62 1.97 2.56 1.46 0.55 1.000 14 x 18 1.000 14 x 18

Click here for Flexible Gear Coupling Installation and Maintenance Instructions

Figure 1