DODGE30A07L18FHRight Angle Worm Gear Reducer, 7:1 Ratio, 3.00 in Centre Distance, 180TC C-Face Input, Left Hand Solid Output

Product Description

What this part is

A Dodge Tigear-2 right-angle worm gear speed reducer in the 3.00 in centre-distance frame, 7:1 nominal ratio, with a NEMA 180TC C-face motor input and a left-hand solid output shaft. The worm set turns the drive through 90° and reduces speed while multiplying torque, which is why this is the standard gearbox on conveyors, augers, mixers and packaging drives where the motor has to sit at right angles to the driven shaft.

Decoding the order code

Tigear-2 numbers read left to right as centre distance, input style, ratio, output shaft, motor frame:

30 — 3.00 in centre distance (the gear case size, and the number that fixes the mounting footprint)A — C-face motor-mount input build07 — 7:1 nominal reductionL — solid output shaft on the left-hand side as viewed from the input18 — NEMA 180TC motor flange

What these specs mean in practice

Centre distance, not ratio, sets the torque class. A 3.00 in Tigear-2 is substantially stronger than the 2.6 in or 2.3 in frames at the same ratio, and the housings are not interchangeable — check the centre distance before you check anything else.

7:1 is a low ratio for a worm box. Low-ratio worm sets are the efficient end of the range and are generally not self-locking — do not assume this reducer will hold a suspended load when the motor stops. If holding is needed, specify a brake motor or a separate brake.

The 180TC C-face input is a hard interface: only a 180TC motor bolts to it. It is not a solid-input shaft version and will not accept a 140TC or 210TC motor.

L is the output shaft hand. An R-coded unit of the same size is a mirror build, so confirm which side your driven shaft sits on before ordering.

Published specifications

Type: right-angle worm gear speed reducer, Dodge Tigear-2Nominal ratio: 7:1Centre distance: 3.00 inInput: NEMA 180TC C-face motor flangeOutput: solid shaft, left handShaft orientation: right angle (90°)Housing: cast ironLubrication: factory filled and sealedOrigin: United States

Quantity and configuration

One reducer. No motor is included — this is the gearbox alone. New old stock; see the photographs for exactly which accessory parts ship with it.

Installation and setup notes

Mount so the specified oil level is correct for the position you are using; a worm box run in an orientation it was not filled for will starve the worm. Break a new or long-stored unit in under partial load before applying full torque, and check the output shaft key and seal condition before fitting a sprocket or coupling. Apply a service factor suited to the duty — shock loads and frequent starts wear worm gearing far faster than steady running.

Interchange guidance

30A07R18 is the same reducer with the output shaft on the opposite hand. Other 30-series ratios share the housing and mounting but not the output speed. 26 and 23 series Tigear-2 reducers are smaller centre distances — related sizes, not substitutes. Quill-input builds (Q in the code) mount a motor differently and are not interchangeable with an A-code C-face unit.