800BR Series Helical Worm Gear Drives
Boston Gear’s 800BR Series helical worm gear drives are heavy duty helical gear drives with long life performance features and simplified maintenance. The 800BR Series comes in double and triple reduction ratios from 8:1 through 900:1 and a maximum 10HP rating.
As always, the 800BR Series is available via Reducer Express.
Double Reduction
Part Number | Ratio | Torque CAP(LB-IN) | Motor HP | Output RPM @1750 |
S832BR-125S | 125 | 1311 | 0.36 | 14 |
S832BR-12S | 12 | 787 | 1.95 | 145 |
S832BR-140S | 140 | 1310 | 0.4 | 12 |
S832BR-14S | 14 | 790 | 1.79 | 125 |
S832BR-160S | 160 | 1364 | 0.37 | 10 |
S832BR-16S | 16 | 730 | 1.7 | 109 |
S832BR-18S | 18 | 864 | 1.5 | 97 |
S832BR-20S | 20 | 860 | 1.43 | 87 |
S832BR-212S | 212 | 1333 | 0.28 | 8.2 |
S832BR-22S | 22 | 804 | 1.39 | 79 |
S832BR-250S | 250 | 1382 | 0.25 | 7 |
S832BR-25S | 25 | 843 | 1.28 | 70 |
S832BR-28S | 28 | 862 | 1.17 | 62 |
S832BR-32S | 32 | 971 | 1 | 54 |
S832BR-36S | 36 | 936 | 0.99 | 48 |
S832BR-40S | 40 | 933 | 0.94 | 43 |
S832BR-45S | 45 | 1032 | 0.8 | 38 |
S832BR-50S | 50 | 1000 | 0.71 | 35 |
S832BR-56S | 56 | 1033 | 0.74 | 31 |
S832BR-63S | 63 | 1040 | 0.67 | 27 |
S832BR-71S | 71 | 1192 | 0.59 | 24 |
S832BR-80S | 80 | 1250 | 0.54 | 21 |
S832BR-8S | 8 | 689 | 2.65 | 218 |
S832BR-90S | 90 | 1187 | 0.57 | 19 |
S842BR-100S | 100 | 1835 | 0.81 | 17 |
S842BR-112S | 112 | 1412 | 0.48 | 15 |
S842BR-11S | 11 | 1194 | 3.57 | 159 |
S842BR-125S | 125 | 1248 | 0.36 | 14 |
S842BR-12S | 12 | 1264 | 3.25 | 145 |
S842BR-140S | 140 | 2117 | 0.64 | 12 |
S842BR-14S | 14 | 1288 | 2.99 | 125 |
S842BR-160S | 160 | 2216 | 0.59 | 10 |
S842BR-16S | 16 | 1218 | 2.72 | 109 |
S842BR-18S | 18 | 1388 | 2.5 | 97 |
S842BR-20S | 20 | 1391 | 2.37 | 87 |
S842BR-212S | 212 | 2352 | 0.47 | 8.2 |
S842BR-22S | 22 | 1321 | 2.23 | 79 |
S842BR-250S | 250 | 2050 | 0.36 | 7 |
S842BR-25S | 25 | 1389 | 2.04 | 70 |
S842BR-28S | 28 | 1363 | 1.88 | 62 |
S842BR-32S | 32 | 1560 | 1.66 | 54 |
S842BR-36S | 36 | 1525 | 1.59 | 48 |
S842BR-40S | 40 | 1527 | 1.51 | 43 |
S842BR-45S | 45 | 1669 | 1.34 | 38 |
S842BR-50S | 50 | 1616 | 1.19 | 35 |
S842BR-56S | 56 | 1670 | 1.18 | 31 |
S842BR-63S | 63 | 1710 | 1.07 | 27 |
S842BR-71S | 71 | 1739 | 0.88 | 24 |
S842BR-80S | 80 | 1619 | 0.74 | 21 |
S842BR-8S | 8 | 1160 | 4.39 | 218 |
S842BR-90S | 90 | 1934 | 0.91 | 19 |
S852BR-100S | 100 | 4225 | 1.71 | 17 |
S852BR-112S | 112 | 3088 | 1 | 15 |
S852BR-11S | 11 | 1930 | 5.52 | 159 |
S852BR-125S | 125 | 2630 | 0.75 | 14 |
S852BR-12S | 12 | 2010 | 5.22 | 145 |
S852BR-140S | 140 | 4143 | 1.3 | 12 |
S852BR-14S | 14 | 2060 | 4.85 | 125 |
S852BR-160S | 160 | 4738 | 1.19 | 10 |
S852BR-16S | 16 | 2710 | 5.92 | 109 |
S852BR-18S | 18 | 2162 | 4.21 | 97 |
S852BR-20S | 20 | 2345 | 3.9 | 87 |
S852BR-212S | 212 | 5021 | 0.97 | 8.2 |
S852BR-22S | 22 | 3086 | 4.9 | 79 |
S852BR-250S | 250 | 4566 | 0.75 | 7 |
S852BR-25S | 25 | 3177 | 4.62 | 70 |
S852BR-28S | 28 | 3200 | 4.24 | 62 |
S852BR-32S | 32 | 2813 | 2.98 | 54 |
S852BR-36S | 36 | 3262 | 3.59 | 48 |
S852BR-40S | 40 | 3453 | 3.28 | 43 |
S852BR-45S | 45 | 3165 | 2.37 | 38 |
S852BR-50S | 50 | 3248 | 2.24 | 35 |
S852BR-56S | 56 | 3813 | 2.63 | 31 |
S852BR-63S | 63 | 3899 | 2.39 | 27 |
S852BR-71S | 71 | 3225 | 1.71 | 24 |
S852BR-80S | 80 | 3453 | 1.5 | 21 |
S852BR-8S | 8 | 1678 | 6.66 | 218 |
S852BR-90S | 90 | 4178 | 1.82 | 19 |
S862BR-100S | 100 | 7539 | 2.87 | 17 |
S862BR-112S | 112 | 6574 | 1.97 | 15 |
S862BR-11S | 11 | 3480 | 9.38 | 159 |
S862BR-125S | 125 | 4832 | 1.25 | 14 |
S862BR-12S | 12 | 3646 | 8.77 | 145 |
S862BR-140S | 140 | 7520 | 2.02 | 12 |
S862BR-14S | 14 | 3827 | 8.2 | 125 |
S862BR-160S | 160 | 7504 | 1.86 | 10 |
S862BR-16S | 16 | 4199 | 9.03 | 109 |
S862BR-18S | 18 | 4208 | 7.1 | 97 |
S862BR-20S | 20 | 4400 | 6.58 | 87 |
S862BR-212S | 212 | 7607 | 1.39 | 8.2 |
S862BR-22S | 22 | 4784 | 7.41 | 79 |
S862BR-250S | 250 | 7676 | 1.25 | 7 |
S862BR-25S | 25 | 5026 | 6.94 | 70 |
S862BR-28S | 28 | 5290 | 6.49 | 62 |
S862BR-32S | 32 | 5184 | 4.93 | 54 |
S862BR-36S | 36 | 5768 | 5.65 | 48 |
S862BR-40S | 40 | 6045 | 5.25 | 43 |
S862BR-45S | 45 | 5810 | 3.95 | 38 |
S862BR-50S | 50 | 5930 | 3.79 | 35 |
S862BR-56S | 56 | 6500 | 4.2 | 31 |
S862BR-63S | 63 | 6720 | 3.76 | 27 |
S862BR-71S | 71 | 6645 | 2.94 | 24 |
S862BR-80S | 80 | 6783 | 2.77 | 21 |
S862BR-8S | 8 | 2940 | 11.4 | 218 |
S862BR-90S | 90 | 7514 | 3.05 | 19 |
Click on link below to see Drawings and Specs:
Boston Gear Drive – 800BR Series Helical Worm Gear Drive Non-Flanged Double Reducer PDF
Triple Reduction
Part Number | Ratio | Torque CAP(LB-IN) | Motor HP | Output RPM @1750 |
S833BR-118S | 118 | 1321 | 0.42 | 14 |
S833BR-132S | 132 | 1270 | 0.42 | 13 |
S833BR-150S | 150 | 1237 | 0.4 | 11 |
S833BR-160S | 160 | 1320 | 0.33 | 10 |
S833BR-180S | 180 | 1247 | 0.27 | 9.1 |
S833BR-200S | 200 | 1346 | 0.33 | 8.8 |
S833BR-225S | 225 | 1311 | 0.27 | 7.8 |
S833BR-265S | 265 | 1297 | 0.2 | 6.6 |
S833BR-280S | 280 | 1357 | 0.18 | 6.2 |
S833BR-315S | 315 | 1311 | 0.2 | 5.6 |
S833BR-360S | 360 | 1177 | 0.18 | 4.9 |
S833BR-400S | 400 | 1296 | 0.13 | 4.4 |
S833BR-450S | 450 | 1279 | 0.11 | 3.9 |
S833BR-500S | 500 | 1354 | 0.13 | 3.5 |
S833BR-560S | 560 | 1384 | 0.12 | 3.1 |
S833BR-800S | 800 | 1274 | 0.08 | 2.2 |
S833BR-900S | 900 | 1247 | 0.07 | 1.9 |
S843BR-100S | 100 | 1700 | 0.63 | 17 |
S843BR-118S | 118 | 1698 | 0.55 | 14 |
S843BR-132S | 132 | 1953 | 0.66 | 13 |
S843BR-150S | 150 | 1980 | 0.63 | 11 |
S843BR-160S | 160 | 1693 | 0.41 | 10 |
S843BR-180S | 180 | 1545 | 0.35 | 9.1 |
S843BR-200S | 200 | 2267 | 0.5 | 8.8 |
S843BR-225S | 225 | 2346 | 0.46 | 7.8 |
S843BR-265S | 265 | 1588 | 0.25 | 6.6 |
S843BR-280S | 280 | 1590 | 0.23 | 6.2 |
S843BR-315S | 315 | 2620 | 0.39 | 5.6 |
S843BR-360S | 360 | 2496 | 0.35 | 4.9 |
S843BR-400S | 400 | 1647 | 0.16 | 4.4 |
S843BR-450S | 450 | 1572 | 0.14 | 3.9 |
S843BR-500S | 500 | 2647 | 0.25 | 3.5 |
S843BR-560S | 560 | 2745 | 0.23 | 3.1 |
S843BR-800S | 800 | 2591 | 0.16 | 2.2 |
S843BR-900S | 900 | 2494 | 0.14 | 1.9 |
S853BR-100S | 100 | 3477 | 1.22 | 17 |
S853BR-118S | 118 | 3436 | 1.07 | 14 |
S853BR-132S | 132 | 4596 | 1.42 | 13 |
S853BR-150S | 150 | 4604 | 1.35 | 11 |
S853BR-160S | 160 | 3406 | 0.79 | 10 |
S853BR-180S | 180 | 3161 | 0.68 | 9.1 |
S853BR-200S | 200 | 5139 | 1.08 | 8.8 |
S853BR-225S | 225 | 5260 | 0.97 | 7.8 |
S853BR-265S | 265 | 3351 | 0.49 | 6.6 |
S853BR-280S | 280 | 3356 | 0.44 | 6.2 |
S853BR-315S | 315 | 5252 | 0.75 | 5.6 |
S853BR-360S | 360 | 4862 | 0.63 | 4.9 |
S853BR-400S | 400 | 3368 | 0.32 | 4.4 |
S853BR-450S | 450 | 3305 | 0.28 | 3.9 |
S853BR-500S | 500 | 5146 | 0.46 | 3.5 |
S853BR-560S | 560 | 5296 | 0.42 | 3.1 |
S853BR-800S | 800 | 5308 | 0.31 | 2.2 |
S853BR-900S | 900 | 5099 | 0.27 | 1.9 |
S863BR-100S | 100 | 7173 | 2.34 | 17 |
S863BR-118S | 118 | 7434 | 2.14 | 14 |
S863BR-132S | 132 | 7410 | 2.21 | 13 |
S863BR-150S | 150 | 7143 | 2 | 11 |
S863BR-160S | 160 | 7431 | 1.51 | 10 |
S863BR-180S | 180 | 7427 | 1 | 9.1 |
S863BR-200S | 200 | 7443 | 1 | 8.8 |
S863BR-225S | 225 | 7405 | 1 | 7.8 |
S863BR-265S | 265 | 6895 | 0.98 | 6.6 |
S863BR-280S | 280 | 7671 | 0.88 | 6.2 |
S863BR-315S | 315 | 7490 | 0.94 | 5.6 |
S863BR-360S | 360 | 7382 | 0.87 | 4.9 |
S863BR-400S | 400 | 7686 | 0.67 | 4.4 |
S863BR-450S | 450 | 7692 | 0.59 | 3.9 |
S863BR-500S | 500 | 6913 | 0.62 | 3.5 |
S863BR-560S | 560 | 7200 | 0.55 | 3.1 |
S863BR-800S | 800 | 7734 | 0.43 | 2.2 |
S863BR-900S | 900 | 7659 | 0.38 | 1.9 |
Click on link below to see Drawings and Specs:
Boston Gear Drive – 800BR Series Helical Worm Gear Drive Non-Flanged Triple Reducer PDF