NORDBLOC.1® 2 & 3 Stage Helical Inline Gear Units

The NORDBLOC.1 design enables installation of stronger bearings compared to the previous NORDBLOC series. This results in higher permissible radial and axial forces and a longer service life. Gear motors that utilize the helical inline design can be implemented with direct motor attachment.

The aluminum housing is lightweight and its smooth surfaces have inherent corrosion protection even without paint, although paint is offered as an option. For additonal surface protection in extreme operating environments, including hygienic, caustic, and heavy wash-down areas, nsd tupH Sealed Surface Conversion System is also available.

Power:  0.16 – 50 hp
Output Speed:  23 – 674 rpm
Output Torque:  85.8 – 33940 lb-in

Gear Box Models
Nord SK 072.1 | Nord SK 172.1 | Nord SK 372.1 | Nord SK 572.1 | Nord SK 672.1 | Nord SK 772.1 | Nord SK 872.1 | Nord SK 972.1 | Nord SK 373.1 | Nord SK 573.1 | Nord SK 673.1 | Nord SK 773.1 | Nord SK 873.1 | Nord SK 973.1 |

CATALOG & MANUALS

 
Catalog Nordbloc.1 Helical Inline Gearbox Catalog
Users Manual Nordbloc.1-Helical Inline Gearbox Users Manual
Dimensions Nordbloc.1 Helical Inline Gearbox Dimensions
Order Form Nordbloc.1 Helical Inline Gearbox Order Form

Features

  • High efficiency for low operating costs
  • Compact design means low space requirements
  • Robust grey cast iron housing
  • High axial and radial load capacities enable safe operation
  • Quiet running
  • Application-specific versions

Gearbox Selection

Below are some guideline steps to help aid in
the gear unit selection.
1. Determine the speed and/or gear ratio (see order form)
2. Determine the required power or torque (see order form)
3. Determine Service Factor
4. Select the basic gearbox type and input
5. Determine the required mounting position
6. Select options
7. Checks – overhung load, thrust load, NEMA motor weight, thermal considerations, and other application considerations

Mounting Positions

Gearbox Options

X Foot-mounted housing
F B5 flange
Z B14 flange
V Solid shaft
VL Reinforced output bearings
VI Fluoro-rubber seals (FKM)
2WD Double-output shaft seals
OV Open vent
DR Spring-loaded breather / AUTOVENTTM
OSG Oil sight glass
OC Oil cooler
OA Oil expansion chamber
OT Oil reservoir tank
W Solid input shaft
IEC/NEMA IEC and NEMA motor adapter

AVAILABLE SK 072.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 072.1 - 63 SP/4 0.16 hp 27 - 98 rpm 103 - 378 lb-in 13.7 lb
Nord SK 072.1 - 63 LP/4 0.25 hp 148 - 184 rpm 85.8 - 107 lb-in 15.7 lb
Nord SK 072.1 - 71 SP/4 0.33 hp 41 - 194 rpm 107 - 508 lb-in 18.7 lb
Nord SK 072.1 - 71 LP/4 0.50 hp 62 - 314 rpm 314 - 507 lb-in 21.2 lb
Nord SK 072.1 - 80 SP/4 0.75 hp 81 - 529 rpm 89.3 - 583 lb-in 26.7 lb

AVAILABLE SK 172.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 172.1 - 63 SP/4 0.16 hp 21 - 61 rpm 164 - 485 lb-in 17.4 lb
Nord SK 172.1 - 63 LP/4 0.25 hp 21 - 92 rpm 172 - 753 lb-in 19.4 lb
Nord SK 172.1 - 71 SP/4 0.33 hp 32 - 127 rpm 163 - 651 lb-in 22.5 lb
Nord SK 172.1 - 71 LP/4 0.50 hp 45 - 198 rpm 159 - 708 lb-in 24.9 lb
Nord SK 172.1 - 80 SP/4 0.75 hp 63 - 301 rpm 157 - 752 lb-in 30.4 lb
Nord SK 172.1 - 80 LP/4 1.00 hp 63 - 746 rpm 84.4 - 1006 lb-in 31.5 lb
Nord SK 172.1 - 90 SP/4 1.50 hp 153 - 751 rpm 126 - 619 lb-in 42.3 lb
Nord SK 172.1 - 90 LP/4 2.00 hp 152 - 746 rpm 169 - 830 lb-in 45.9 lb

AVAILABLE SK 372.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 372.1 - 63 SP/4 0.16 hp 23 - 31 rpm 320 - 431 lb-in 23.8 lb
Nord SK 372.1 - 63 LP/4 0.25 hp 24 - 45 rpm 352 - 669 lb-in 25.8 lb
Nord SK 372.1 - 71 SP/4 0.33 hp 24 - 57 rpm 363 - 873 lb-in 28.9 lb
Nord SK 372.1 - 71 LP/4 0.50 hp 24 - 57 rpm 550 - 1322 lb-in 31.3 lb
Nord SK 372.1 - 80 SP/4 0.75 hp 29 - 119 rpm 397 - 1657 lb-in 36.8 lb
Nord SK 372.1 - 80 LP/4 1.00 hp 40 - 184 rpm 342 - 1576 lb-in 37.9 lb
Nord SK 372.1 - 90 SP/4 1.50 hp 51 - 373 rpm 253 - 1839 lb-in 48.7 lb
Nord SK 372.1 - 90 LP/4 2.00 hp 67 - 659 rpm 191 - 1883 lb-in 52.2 lb
Nord SK 372.1 - 100 LP/4 3.00 hp 153 - 674 rpm 280 - 1234 lb-in 77.2 lb
Nord SK 372.1 - 100 AP/4 4.00 hp 153 - 673 rpm 375 - 1650 lb-in 77.2 lb

AVAILABLE SK 572.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 572.1 - 71 SP/4 0.33 hp 32 rpm 656 lb-in 45.4 lb
Nord SK 572.1 - 71 LP/4 0.50 hp 32 - 38 rpm 836 - 994 lb-in 47.8 lb
Nord SK 572.1 - 80 SP/4 0.75 hp 32 - 64 rpm 736 - 1482 lb-in 53.4 lb
Nord SK 572.1 - 80 LP/4 1.00 hp 32 - 88 rpm 713 - 1982 lb-in 54.5 lb
Nord SK 572.1 - 90 SP/4 1.50 hp 32 - 127 rpm 743 - 2956 lb-in 65.3 lb
Nord SK 572.1 - 90 LP/4 2.00 hp 41 - 172 rpm 731 - 3088 lb-in 68.8 lb
Nord SK 572.1 - 100 LP/4 3.00 hp 57 - 606 rpm 312 - 3341 lb-in 93.7 lb
Nord SK 572.1 - 100 AP/4 4.00 hp 72 - 604 rpm 418 - 3510 lb-in 93.7 lb
Nord SK 572.1 - 112 MP/4 5.00 hp 90 - 600 rpm 525 - 3514 lb-in 110.2 lb
Nord SK 572.1 - 132 SP/4 7.50 hp 157 - 606 rpm 781 - 3004 lb-in 153.2 lb
Nord SK 572.1 - 132 MP/4 10.00 hp 157 - 604 rpm 1044 - 4017 lb-in 168.7 lb

AVAILABLE SK 672.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 672.1 - 71 LP/4 0.50 hp 30 rpm 1035 lb-in 60 lb
Nord SK 672.1 - 80 SP/4 0.75 hp 31 - 49 rpm 974 - 1543 lb-in 65.5 lb
Nord SK 672.1 - 80 LP/4 1.00 hp 31 - 48 rpm 1302 - 2064 lb-in 66.6 lb
Nord SK 672.1 - 90 SP/4 1.50 hp 31 - 84 rpm 1121 - 3078 lb-in 77.4 lb
Nord SK 672.1 - 90 LP/4 2.00 hp 39 - 113 rpm 1119 - 3246 lb-in 80.9 lb
Nord SK 672.1 - 100 LP/4 3.00 hp 54 - 191 rpm 988 - 3480 lb-in 105.8 lb
Nord SK 672.1 - 100 AP/4 4.00 hp 54 - 261 rpm 964 - 4653 lb-in 105.8 lb
Nord SK 672.1 - 112 MP/4 5.00 hp 85 - 490 rpm 642 - 3703 lb-in 122.4 lb
Nord SK 672.1 - 132 SP/4 7.50 hp 115 - 665 rpm 710 - 4100 lb-in 165.3 lb
Nord SK 672.1 - 132 MP/4 10.00 hp 115 - 664 rpm 950 - 5483 lb-in 180.8 lb

AVAILABLE SK 772.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 772.1 - 90 SP/4 1.50 hp 65 rpm 1459 lb-in 103.8 lb
Nord SK 772.1 - 90 LP/4 2.00 hp 64 - 85 rpm 1480 - 1957 lb-in 107.4 lb
Nord SK 772.1 - 100 LP/4 3.00 hp 66 - 152 rpm 1246 - 2869 lb-in 132.3 lb
Nord SK 772.1 - 100 AP/4 4.00 hp 66 - 217 rpm 1160 - 3836 lb-in 132.3 lb
Nord SK 772.1 - 112 MP/4 5.00 hp 65 - 283 rpm 1112 - 4823 lb-in 148.8 lb
Nord SK 772.1 - 132 SP/4 7.50 hp 87 - 493 rpm 960 - 5425 lb-in 191.8 lb
Nord SK 772.1 - 132 MP/4 10.00 hp 87 - 565 rpm 1116 - 7253 lb-in 207.2 lb
Nord SK 772.1 - 160 MP/4 15.00 hp 123 - 566 rpm 1669 - 7678 lb-in 275.6 lb
Nord SK 772.1 - 160 LP/4 20.00 hp 177 - 568 rpm 2219 - 7104 lb-in 339.5 lb

AVAILABLE SK 872.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 872.1 - 100 LP/4 3.00 hp 41 - 50 rpm 3747 - 4558 lb-in 208.3 lb
Nord SK 872.1 - 100 AP/4 4.00 hp 41 - 50 rpm 5010 - 6094 lb-in 208.3 lb
Nord SK 872.1 - 112 MP/4 5.00 hp 41 - 116 rpm 2726 - 7661 lb-in 224.9 lb
Nord SK 872.1 - 132 SP/4 7.50 hp 41 - 192 rpm 2467 - 11394 lb-in 267.9 lb
Nord SK 872.1 - 132 MP/4 10.00 hp 55 - 269 rpm 2346 - 11427 lb-in 283.3 lb
Nord SK 872.1 - 160 MP/4 15.00 hp 63 - 556 rpm 1699 - 14955 lb-in 351.6 lb
Nord SK 872.1 - 160 LP/4 20.00 hp 95 - 558 rpm 2259 - 13256 lb-in 415.6 lb
Nord SK 872.1 - 180 MP/4 25.00 hp 117 - 560 rpm 2816 - 13437 lb-in 488.3 lb
Nord SK 872.1 - 180 LP/4 30.00 hp 117 - 560 rpm 3379 - 16124 lb-in 488.3 lb

AVAILABLE SK 972.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 972.1 - 112 MP/4 5.00 hp 41 rpm 7678 lb-in 310.9 lb
Nord SK 972.1 - 132 SP/4 7.50 hp 41 - 90 rpm 5267 - 11419 lb-in 353.8 lb
Nord SK 972.1 - 132 MP/4 10.00 hp 41 - 130 rpm 4842 - 15268 lb-in 369.3 lb
Nord SK 972.1 - 160 MP/4 15.00 hp 48 - 209 rpm 4516 - 19862 lb-in 437.6 lb
Nord SK 972.1 - 160 LP/4 20.00 hp 81 - 338 rpm 3728 - 15614 lb-in 501.6 lb
Nord SK 972.1 - 180 MP/4 25.00 hp 81 - 477 rpm 3306 - 19462 lb-in 574.3 lb
Nord SK 972.1 - 180 LP/4 30.00 hp 81 - 535 rpm 3535 - 23355 lb-in 574.3 lb
Nord SK 972.1 - 225 RP/4 40.00 hp 126 - 536 rpm 4700 - 20000 lb-in 927 lb
Nord SK 972.1 - 225 SP/4 50.00 hp 126 - 536 rpm 5875 - 25000 lb-in 960.1 lb

AVAILABLE SK 373.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 373.1 - 63 SP/4 0.16 hp 4.9 - 36 rpm 280 - 2046 lb-in 24.9 lb
Nord SK 373.1 - 63 LP/4 0.25 hp 7.5 - 57 rpm 275 - 2109 lb-in 26.9 lb
Nord SK 373.1 - 71 SP/4 0.33 hp 9.3 - 76 rpm 274 - 2231 lb-in 30 lb
Nord SK 373.1 - 71 LP/4 0.50 hp 14 - 93 rpm 340 - 2202 lb-in 32.4 lb
Nord SK 373.1 - 80 SP/4 0.75 hp 21 - 93 rpm 507 - 2249 lb-in 37.9 lb
Nord SK 373.1 - 80 LP/4 1.00 hp 29 - 93 rpm 679 - 2194 lb-in 39 lb
Nord SK 373.1 - 90 SP/4 1.50 hp 47 - 93 rpm 1012 - 2023 lb-in 49.8 lb
Nord SK 373.1 - 90 LP/4 2.00 hp 58 - 93 rpm 1357 - 2169 lb-in 53.4 lb

AVAILABLE SK 573.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 573.1 - 63 SP/4 0.16 hp 4.2 - 16 rpm 639 - 2396 lb-in 41.4 lb
Nord SK 573.1 - 63 LP/4 0.25 hp 4.2 - 25 rpm 625 - 3722 lb-in 43.4 lb
Nord SK 573.1 - 71 SP/4 0.33 hp 4.6 - 36 rpm 578 - 4536 lb-in 46.5 lb
Nord SK 573.1 - 71 LP/4 0.50 hp 6.4 - 56 rpm 565 - 4919 lb-in 48.9 lb
Nord SK 573.1 - 80 SP/4 0.75 hp 9.7 - 81 rpm 581 - 4865 lb-in 54.5 lb
Nord SK 573.1 - 80 LP/4 1.00 hp 13 - 99 rpm 635 - 4969 lb-in 55.6 lb
Nord SK 573.1 - 90 SP/4 1.50 hp 20 - 100 rpm 947 - 4628 lb-in 66.4 lb
Nord SK 573.1 - 90 LP/4 2.00 hp 26 - 99 rpm 1269 - 4928 lb-in 69.9 lb
Nord SK 573.1 - 100 LP/4 3.00 hp 41 - 102 rpm 1861 - 4636 lb-in 94.8 lb
Nord SK 573.1 - 100 AP/4 4.00 hp 57 - 101 rpm 2488 - 4418 lb-in 94.8 lb
Nord SK 573.1 - 112 MP/4 5.00 hp 74 - 101 rpm 3128 - 4273 lb-in 111.3 lb

AVAILABLE SK 673.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 673.1 - 63 SP/4 0.16 hp 4.7 - 12 rpm 853 - 2156 lb-in 54.7 lb
Nord SK 673.1 - 63 LP/4 0.25 hp 4.7 - 18 rpm 877 - 3349 lb-in 56.7 lb
Nord SK 673.1 - 71 SP/4 0.33 hp 4.8 - 23 rpm 888 - 4370 lb-in 59.7 lb
Nord SK 673.1 - 71 LP/4 0.50 hp 4.8 - 38 rpm 819 - 6621 lb-in 62.2 lb
Nord SK 673.1 - 80 SP/4 0.75 hp 7.0 - 76 rpm 622 - 6762 lb-in 67.7 lb
Nord SK 673.1 - 80 LP/4 1.00 hp 9.5 - 76 rpm 831 - 6626 lb-in 68.8 lb
Nord SK 673.1 - 90 SP/4 1.50 hp 14 - 76 rpm 1240 - 6701 lb-in 79.6 lb
Nord SK 673.1 - 90 LP/4 2.00 hp 18 - 76 rpm 1663 - 6912 lb-in 83.1 lb
Nord SK 673.1 - 100 LP/4 3.00 hp 32 - 78 rpm 2438 - 5888 lb-in 108 lb
Nord SK 673.1 - 100 AP/4 4.00 hp 36 - 77 rpm 3259 - 7070 lb-in 108 lb
Nord SK 673.1 - 112 MP/4 5.00 hp 47 - 77 rpm 4097 - 6685 lb-in 124.6 lb

AVAILABLE SK 773.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 773.1 - 71 SP/4 0.33 hp 4.4 - 15 rpm 1416 - 4768 lb-in 87.3 lb
Nord SK 773.1 - 71 LP/4 0.50 hp 4.4 - 27 rpm 1159 - 7224 lb-in 89.7 lb
Nord SK 773.1 - 80 SP/4 0.75 hp 5.1 - 40 rpm 1183 - 9296 lb-in 95.2 lb
Nord SK 773.1 - 80 LP/4 1.00 hp 6.6 - 60 rpm 1043 - 9479 lb-in 96.3 lb
Nord SK 773.1 - 90 SP/4 1.50 hp 11 - 81 rpm 1168 - 8705 lb-in 107.1 lb
Nord SK 773.1 - 90 LP/4 2.00 hp 15 - 80 rpm 1566 - 8155 lb-in 110.7 lb
Nord SK 773.1 - 100 LP/4 3.00 hp 21 - 82 rpm 2296 - 8901 lb-in 135.6 lb
Nord SK 773.1 - 100 AP/4 4.00 hp 28 - 82 rpm 3070 - 9059 lb-in 135.6 lb
Nord SK 773.1 - 112 MP/4 5.00 hp 34 - 82 rpm 3859 - 9213 lb-in 152.1 lb
Nord SK 773.1 - 132 SP/4 7.50 hp 56 - 82 rpm 5739 - 8502 lb-in 195.1 lb
Nord SK 773.1 - 132 MP/4 10.00 hp 70 - 82 rpm 7674 - 9067 lb-in 210.5 lb

AVAILABLE SK 873.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 873.1 - 90 SP/4 1.50 hp 5.5 - 44 rpm 2156 - 17125 lb-in 184.3 lb
Nord SK 873.1 - 90 LP/4 2.00 hp 6.7 - 57 rpm 2220 - 18770 lb-in 187.8 lb
Nord SK 873.1 - 100 LP/4 3.00 hp 11 - 75 rpm 2509 - 17670 lb-in 212.7 lb
Nord SK 873.1 - 100 AP/4 4.00 hp 14 - 75 rpm 3355 - 18215 lb-in 212.7 lb
Nord SK 873.1 - 112 MP/4 5.00 hp 17 - 75 rpm 4218 - 18139 lb-in 229.3 lb
Nord SK 873.1 - 132 SP/4 7.50 hp 26 - 92 rpm 5166 - 18026 lb-in 272.3 lb
Nord SK 873.1 - 132 MP/4 10.00 hp 35 - 91 rpm 6907 - 17970 lb-in 287.7 lb
Nord SK 873.1 - 160 MP/4 15.00 hp 55 - 92 rpm 10332 - 17220 lb-in 356 lb
Nord SK 873.1 - 160 LP/4 20.00 hp 76 - 92 rpm 13737 - 16681 lb-in 420 lb

AVAILABLE SK 973.1 GEAR BOX
Gearbox Unit HP Output Speed Output Torque Weight
Nord SK 973.1 - 90 SP/4 1.50 hp 3.8 - 23 rpm 4192 - 24818 lb-in 270.3 lb
Nord SK 973.1 - 90 LP/4 2.00 hp 3.8 - 31 rpm 4055 - 33281 lb-in 273.8 lb
Nord SK 973.1 - 100 LP/4 3.00 hp 5.4 - 42 rpm 4541 - 34767 lb-in 298.7 lb
Nord SK 973.1 - 100 AP/4 4.00 hp 7.5 - 65 rpm 3888 - 33533 lb-in 298.7 lb
Nord SK 973.1 - 112 MP/4 5.00 hp 8.9 - 64 rpm 4888 - 35462 lb-in 315.3 lb
Nord SK 973.1 - 132 SP/4 7.50 hp 13 - 79 rpm 5987 - 35373 lb-in 358.3 lb
Nord SK 973.1 - 132 MP/4 10.00 hp 19 - 79 rpm 8005 - 33910 lb-in 373.7 lb
Nord SK 973.1 - 160 MP/4 15.00 hp 27 - 79 rpm 11974 - 35242 lb-in 442 lb
Nord SK 973.1 - 160 LP/4 20.00 hp 37 - 79 rpm 15920 - 33800 lb-in 506 lb
Nord SK 973.1 - 180 MP/4 25.00 hp 48 - 79 rpm 19844 - 33073 lb-in 578.7 lb
Nord SK 973.1 - 180 LP/4 30.00 hp 56 - 79 rpm 23813 - 33940 lb-in 578.7 lb