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° while reducing speed and multiplying torque — the standard arrangement on conveyors, augers, mixers and packaging drives where the motor must 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 (gear case size and mounting footprint)A — C-face motor-mount input build07 — 7:1 nominal reductionL — solid output shaft on the left-hand side 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 materially stronger than the 2.6 in and 2.3 in frames at the same ratio, and the housings do not interchange.

7:1 is a low ratio for a worm box — efficient, but generally not self-locking. Do not rely on it to hold a suspended load when the motor stops; use a brake motor or a separate brake for that.

The 180TC C-face input only accepts a 180TC motor. This is not a solid-input-shaft build.

L is the output shaft hand. The R-coded unit is a mirror build, so confirm which side your driven shaft sits on.

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. New old stock; the photographs show which accessory parts ship with it.

Installation and setup notes

Check the oil level for the mounting position you intend to use — a worm box filled for one orientation will starve in another. Run in under partial load before applying full torque, and inspect the output shaft key and seals before fitting a sprocket or coupling. Choose a service factor appropriate to the duty; shock loads and frequent starts are what kill worm gearing.

Interchange guidance

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