The Dodge Tigear-2 Worm Gear Reducer Size 21B, 4:1 is a size 21B right-angle worm gear reducer with a 4:1 ratio.
Dodge Tigear-2 right-angle worm gear reducers deliver more torque than most same-sized competitive units, so you can often downsize. The ventless, sealed design is factory-filled with lubricant, and Tigear-2 shares the footprint and critical mounting dimensions of the original Tigear and many competitive models.
Specifications
| Type | Right-angle worm gear reducer |
|---|---|
| Housing | Cast iron, ventless sealed design |
| Ratio | 4:1 |
| Input options | Quill C-face input; Separate (shaft input); Three-piece coupled C-face input |
| Motor frame options | 140TC motor frame; 56C motor frame; None (shaft input) |
| Output options | Left output; Left/right output; Right output |
| Output torque at 1,750 rpm input | 625 lb-in |
| Output speed at 1,750 rpm input | 438 rpm |
Part numbers
15 Dodge part numbers on this page; choose the options above to see the matching part number.
| Part number | Input | Motor frame | Output |
|---|---|---|---|
| 21BQ04L14 | Quill C-face input | 140TC motor frame | Left output |
| 21BQ04LR14 | Quill C-face input | 140TC motor frame | Left/right output |
| 21BQ04R14 | Quill C-face input | 140TC motor frame | Right output |
| 21BQ04L56 | Quill C-face input | 56C motor frame | Left output |
| 21BQ04LR56 | Quill C-face input | 56C motor frame | Left/right output |
| 21BQ04R56 | Quill C-face input | 56C motor frame | Right output |
| 21BS04L | Separate (shaft input) | None (shaft input) | Left output |
| 21BS04LR | Separate (shaft input) | None (shaft input) | Left/right output |
| 21BS04R | Separate (shaft input) | None (shaft input) | Right output |
| 21BA04L14 | Three-piece coupled C-face input | 140TC motor frame | Left output |
| 21BA04LR14 | Three-piece coupled C-face input | 140TC motor frame | Left/right output |
| 21BA04R14 | Three-piece coupled C-face input | 140TC motor frame | Right output |
| 21BA04L56 | Three-piece coupled C-face input | 56C motor frame | Left output |
| 21BA04LR56 | Three-piece coupled C-face input | 56C motor frame | Left/right output |
| 21BA04R56 | Three-piece coupled C-face input | 56C motor frame | Right output |
Mounting kits and other accessories are in Tigear-2 accessories.
Catalogs & manuals
- Tigear-2 Speed Reducers Catalog
- Tigear-2 Right Angle Quill C-Face 3-Piece Coupled C-Face Separate Speed Reducers
- Tigear-2 Accessory Kit
- Tigear-2 Helical Attachment
- Tigear-2 Output Shaft Reversal
Request a quote for price and lead time, or call 800-985-6929.
Data from Dodge catalogs; confirm details with us before ordering. AutomatedPT is an independent distributor and is not affiliated with Dodge Industrial, Inc. Dodge® and the product names shown are trademarks of Dodge Industrial, Inc.

