
BISON
Frequently asked questions
Common questions about BISON from 3G Electric.
What voltages are available in the BISON right-angle hollow shaft DC gearmotor line?
The BISON right-angle hollow shaft DC gearmotor models listed by 3G Electric include 24 V DC and 90 V DC versions. The 24 V model delivers 7.5 RPM with a 240.4:1 gear ratio, 443 in-lb maximum torque, and 3.2 A full load current. The 90 V model delivers 30 RPM with 208 in-lb maximum torque and 1.5 A full load current. Both use TENV enclosures and are rated for CW/CCW operation. Buyers should confirm the available DC supply voltage and the required output speed and torque before selecting a model, since the voltage and gear ratio are fixed per unit.
What is the difference between BISON direct-drive parallel speed reducers and the 881 series gear reducers?
BISON direct-drive parallel speed reducers are listed with ratios from 5:1 to 27.8:1, output speeds from 60 RPM to 339 RPM, and maximum output torque from 275 in-lb to 1137 in-lb. They accept 1 hp to 1.5 hp input and use a 56C frame with any-angle mounting. The 881 series parallel shaft gear reducers are a separate family that uses dedicated mounting bases and L brackets, including footplates and brackets with a 0.5 in bolt circle diameter. The 881 reducers are supported by specific mounting accessories, so the mounting interface should be verified when specifying a replacement or new installation.
What mounting accessories does 3G Electric carry for BISON 881 gear reducers?
3G Electric lists BISON mounting bases and brackets for the 881 parallel shaft gear reducer. These include a mounting footplate and a mounting L bracket. The L bracket has a 0.5 in bolt circle diameter. These accessories are identified by manufacturer part numbers and are designed to provide a secure mounting interface and maintain alignment between the reducer and the driven equipment. When ordering, confirm the reducer model and the required mounting orientation, because the footplate and L bracket are distinct part numbers and are not interchangeable.
What input horsepower and frame size do BISON parallel shaft speed reducers use?
The BISON direct-drive parallel speed reducers listed by 3G Electric accept maximum input horsepower of 1 hp to 1.5 hp and use a 56C frame input flange. For example, the 5:1 ratio model is rated for 1.5 hp input and 275 in-lb output, while the 27.8:1 ratio model is rated for 1 hp input and 1137 in-lb output. The 56C frame is a standard NEMA motor frame size, which allows the reducer to be paired with a compatible motor. Buyers should match the reducer's input horsepower and frame to the motor being used.
What enclosure type do BISON DC gearmotors use?
The BISON right-angle hollow shaft DC gearmotors listed by 3G Electric use TENV enclosures. TENV stands for totally enclosed, non-ventilated. This enclosure type restricts the exchange of air between the inside and outside of the motor, which helps keep out dust and other airborne contaminants. It does not include an external cooling fan. TENV construction is common in industrial environments where the motor may be exposed to dirt or debris. Buyers should verify that the enclosure rating matches the environmental conditions of the installation, particularly where washdown or corrosive atmospheres are present.
How do I select a BISON gearmotor or speed reducer for a specific output speed and torque?
Selection starts with the required output speed and the torque demand of the driven load. BISON publishes gear ratio, output RPM, and maximum torque for each model. For example, a 5:1 parallel speed reducer delivers 339 RPM and 275 in-lb, while a 27.8:1 unit delivers 60 RPM and 1137 in-lb. Higher ratios generally produce lower output speed and higher torque. Also confirm the input horsepower and frame size, the mounting orientation, and the enclosure type. 3G Electric lists these specifications at the SKU level so buyers can compare models directly. If the application requires a specific mounting interface, check whether a mounting base or bracket is needed.
