Selection Guide of JTA Series Right Angle Gearboxes

Find out more about how to correctly select a complete part number of JTA Series Right Angle Gearboxes?
According to the following sample part number with corresponding additional informaton about JTA Series Right Angle Gearboxes input speed, output speed, gear ratio, torque, power, shaft arrangements and rotation directions and mounting positions. 


Right angle gearboxes are selected on the basis of SPEED, RATIO, POWER, and TORQUE. 

The ratings for right angle gearboxes are based on a service factor of 1.00. For other operating conditions, the application power or torque must be multiplied by the appropriate service factor, to determine the equivalent gear drive power rating. A gear drive should be selected with a rated capacity equal to or greater than the equivalent rating. Below table designates recommended service factors for various conditions of load, power source, and duration of service.

Note: please use these data inside the brackets when "frequent starts and stops" refers to more than 10 starts per hour.
Note: time specified for intermittent and occasional service refers to total operating time per day.
Uniform (Light Shocks) driven machine: generators, conveyor belts, apron conveyor, screw conveyors, ventilators, agitators and mixers for uniform densities, filling and packing stations, gear wheel pumps, feed servos of machine tools.
Medium Shocks driven machine: lifts, swing gear on cranes, pit ventilators, agitators and mixers for unequal densities, piston pumps, timber processing machines, paper processing machines, winches, auxiliary drives in ships, textile machines.
Heavy Shocks driven machine: punches, shears, rolling and smelting machines, heavy-duty centrifuges, heavy-duty supply pumps, edge runners, vibrating machines, cutting machines, brick works machines, heavy-duty lifts.

1. Models
JTA10, JTA15, JTA20, JTA24
Note: click your required model web pages directly, there are specifications tables and assembly drawings for your reference.

2. Gear Ratios
JTA10 with 1:1 ratio.
JTA15 with 1:1, 2:1 ratio.
JTA20 with 1:1, 2:1 ratio.
JTA24 with 1:1, 2:1 ratio.

3. and 4. Input and Output Speed (rpm)


4. Shaft Arrangements and Rotation Directions
Shaft rotation is determined by the relative location of the gears. Right hand (CW: clockwise) or left hand (CCW: counterclockwise) rotations are determined by viewing the end of the shaft. There are 6 type shaft arrangements and direction of shaft rotating for customers selection.
1-LR: 3 way, input shaft CW, double output shafts CW (view from right output shaft). 
1-LR-O: 3 way, input shaft CW, double output shafts CCW (view from right output shaft). 
1-L: 2 way, input shaft CW, output shaft CCW.
1-L-O: 2 way, input shaft CW, output shaft CW.
1-R: 2 way, input shaft CW, output shaft CW.
1-R-O: 2 way, input shaft CW, output shaft CCW.



6. Mounting Positions
Horizontal mount: B3
Over hung mount: B8
Wall mount codes: B5