Boston Gear offers three styles of quality bevel gear drives, each designed with the durability and versatility to suit your application:
RA Right 90 Series
RA “Right 90” Series – These compact spiral bevel gear drives are available in 1:1 and 2:1 versions with either single or double projecting output shafts. Ratings from 0.1 to 3.5 horsepower.
Part Number | Shaft Arrangement | Ratio | Torque Rating | Output HP | Output RPM |
RA1021 | 2-WAY SHAFT | 1:1 | 54 | 1.5 | 1750 |
RA1022 | 2-WAY SHAFT | 1:2 | 40 | 0.55 | 875 |
RA1031 | 3-WAY SHAFT | 1:1 | 54 | 1.5 | 1750 |
RA1032 | 3-WAY SHAFT | 1:2 | 40 | 3.5 | 875 |
RA1521 | 2-WAY SHAFT | 1:1 | 125 | 3.5 | 1750 |
RA1522 | 2-WAY SHAFT | 1:2 | 132 | 1.8 | 875 |
RA1531 | 3-WAY SHAFT | 1:1 | 125 | 3.5 | 1750 |
RA1532 | 3-WAY SHAFT | 1:2 | 132 | 3.5 | 875 |
RA621 | 2-WAY SHAFT | 1:1 | 12 | 0.33 | 1750 |
RA622 | 2-WAY SHAFT | 1:2 | 9.5 | 0.13 | 875 |
RA631 | 3-WAY SHAFT | 1:1 | 12 | 0.33 | 1750 |
RA632 | 3-WAY SHAFT | 1:2 | 9.5 | 0.13 | 875 |
Click on link below to see Drawings and Specs:
Boston Gear Drive – Bevel Gear Right 90 Series PDF
R100/R200 & VR100/VR200
R100/R200 & VR100/VR200 – Four sizes of spiral bevel gear drives with ratings from 2 to 50 horsepower. Horizontal and vertical models are available.
Part Number | Style | Ratio | Torque Rating (LB-IN) | Output HP (Class I) |
R131-AM1 | Horizontal | 1:1 | 151 | 4.2 |
R131-BM1 | Horizontal | 1:1 | 151 | 4.2 |
R131-CM1 | Horizontal | 1:1 | 151 | 4.2 |
R137-AM1 | Horizontal | 1:1 | 318 | 8.8 |
R137-BM1 | Horizontal | 1:1 | 318 | 8.8 |
R137-CM1 | Horizontal | 1:1 | 318 | 8.8 |
R146-AM1 | Horizontal | 1:1 | 905 | 25.1 |
R146-BM1 | Horizontal | 1:1 | 905 | 25.1 |
R146-CM1 | Horizontal | 1:1 | 905 | 25.1 |
R158-AM1 | Horizontal | 1:1 | 1834 | 50.9 |
R158-BM1 | Horizontal | 1:1 | 1834 | 50.9 |
R158-CM1 | Horizontal | 1:1 | 1834 | 50.9 |
R231-AM1 | Horizontal | 2:1 | 158 | 2.2 |
R231-BM1 | Horizontal | 2:1 | 158 | 2.2 |
R231-CM1 | Horizontal | 2:1 | 158 | 2.2 |
R237-AM1 | Horizontal | 2:1 | 267 | 3.7 |
R237-BM1 | Horizontal | 2:1 | 267 | 3.7 |
R237-CM1 | Horizontal | 2:1 | 267 | 3.7 |
R246-AM1 | Horizontal | 2:1 | 878 | 12.2 |
R246-BM1 | Horizontal | 2:1 | 878 | 12.2 |
R246-CM1 | Horizontal | 2:1 | 878 | 12.2 |
R258-AM1 | Horizontal | 2:1 | 1620 | 22.6 |
R258-BM1 | Horizontal | 2:1 | 1620 | 22.6 |
R258-CM1 | Horizontal | 2:1 | 1620 | 22.6 |
VR131-DM1 | Vertical | 1:1 | 151 | 4.2 |
VR131-EM1 | Vertical | 1:1 | 151 | 4.2 |
VR131-FM1 | Vertical | 1:1 | 151 | 4.2 |
VR131-GM5 | Vertical | 1:1 | 151 | 4.2 |
VR131-HM5 | Vertical | 1:1 | 151 | 4.2 |
VR131-JM5 | Vertical | 1:1 | 151 | 4.2 |
VR131-NM5 | Vertical | 1:1 | 151 | 4.2 |
VR131-PM5 | Vertical | 1:1 | 151 | 4.2 |
VR131-QM5 | Vertical | 1:1 | 151 | 4.2 |
VR137-DM1 | Vertical | 1:1 | 318 | 8.8 |
VR137-EM1 | Vertical | 1:1 | 318 | 8.8 |
VR137-FM1 | Vertical | 1:1 | 318 | 8.8 |
VR137-GM5 | Vertical | 1:1 | 318 | 8.8 |
VR137-HM5 | Vertical | 1:1 | 318 | 8.8 |
VR137-JM5 | Vertical | 1:1 | 318 | 8.8 |
VR137-NM5 | Vertical | 1:1 | 318 | 8.8 |
VR137-PM5 | Vertical | 1:1 | 318 | 8.8 |
VR137-QM5 | Vertical | 1:1 | 318 | 8.8 |
VR146-DM1 | Vertical | 1:1 | 905 | 25.1 |
VR146-EM1 | Vertical | 1:1 | 905 | 25.1 |
VR146-FM1 | Vertical | 1:1 | 905 | 25.1 |
VR146-GM5 | Vertical | 1:1 | 905 | 25.1 |
VR146-HM5 | Vertical | 1:1 | 905 | 25.1 |
VR146-JM5 | Vertical | 1:1 | 905 | 25.1 |
VR146-NM5 | Vertical | 1:1 | 905 | 25.1 |
VR146-PM5 | Vertical | 1:1 | 905 | 25.1 |
VR146-QM5 | Vertical | 1:1 | 905 | 25.1 |
VR158-DM1 | Vertical | 1:1 | 1834 | 50.9 |
VR158-EM1 | Vertical | 1:1 | 1834 | 50.9 |
VR158-FM1 | Vertical | 1:1 | 1834 | 50.9 |
VR158-GM5 | Vertical | 1:1 | 1834 | 50.9 |
VR158-HM5 | Vertical | 1:1 | 1834 | 50.9 |
VR158-JM5 | Vertical | 1:1 | 1834 | 50.9 |
VR158-NM5 | Vertical | 1:1 | 1834 | 50.9 |
VR158-PM5 | Vertical | 1:1 | 1834 | 50.9 |
VR158-QM5 | Vertical | 1:1 | 1834 | 50.9 |
VR231-DM1 | Vertical | 2:1 | 158 | 2.2 |
VR231-EM1 | Vertical | 2:1 | 158 | 2.2 |
VR231-FM1 | Vertical | 2:1 | 158 | 2.2 |
VR231-GM5 | Vertical | 2:1 | 158 | 2.2 |
VR231-HM5 | Vertical | 2:1 | 158 | 2.2 |
VR231-JM5 | Vertical | 2:1 | 158 | 2.2 |
VR231-NM5 | Vertical | 2:1 | 158 | 2.2 |
VR231-PM5 | Vertical | 2:1 | 158 | 2.2 |
VR231-QM5 | Vertical | 2:1 | 158 | 2.2 |
VR237-DM1 | Vertical | 2:1 | 267 | 3.7 |
VR237-EM1 | Vertical | 2:1 | 267 | 3.7 |
VR237-FM1 | Vertical | 2:1 | 267 | 3.7 |
VR237-GM1 | Vertical | 2:1 | 267 | 3.7 |
VR237-HM1 | Vertical | 2:1 | 267 | 3.7 |
VR237-JM1 | Vertical | 2:1 | 267 | 3.7 |
VR237-NM5 | Vertical | 2:1 | 267 | 3.7 |
VR237-PM5 | Vertical | 2:1 | 267 | 3.7 |
VR237-QM5 | Vertical | 2:1 | 267 | 3.7 |
VR246-DM1 | Vertical | 2:1 | 878 | 12.2 |
VR246-EM1 | Vertical | 2:1 | 878 | 12.2 |
VR246-FM1 | Vertical | 2:1 | 878 | 12.2 |
VR246-GM5 | Vertical | 2:1 | 878 | 12.2 |
VR246-HM5 | Vertical | 2:1 | 878 | 12.2 |
VR246-JM5 | Vertical | 2:1 | 878 | 12.2 |
VR246-NM5 | Vertical | 2:1 | 878 | 12.2 |
VR246-PM5 | Vertical | 2:1 | 878 | 12.2 |
VR246-QM5 | Vertical | 2:1 | 878 | 12.2 |
VR258-DM1 | Vertical | 2:1 | 1620 | 22.6 |
VR258-EM1 | Vertical | 2:1 | 1620 | 22.6 |
VR258-FM1 | Vertical | 2:1 | 1620 | 22.6 |
VR258-GM5 | Vertical | 2:1 | 1620 | 22.6 |
VR258-HM5 | Vertical | 2:1 | 1620 | 22.6 |
VR258-JM5 | Vertical | 2:1 | 1620 | 22.6 |
VR258-NM5 | Vertical | 2:1 | 1620 | 22.6 |
VR258-PM5 | Vertical | 2:1 | 1620 | 22.6 |
VR258-QM5 | Vertical | 2:1 | 1620 | 22.6 |
Click on link below to see Drawings and Specs:
Boston Gear Drive – Bevel Gear R100/200 VR100/200 PDF