The document describes the standard gears series U, which are speed increasing gears with a ratio of up to i = 1:2. Design 13 demonstrates a fully reversible ratio of 1:1.5. The document also includes dimensions and design parameters for different models.
This document provides technical specifications for the Graessner U series of speed increasing gears. It details the dimensional designs and mounting configurations for different gear sizes, noting that the drive can also be applied to shaft d to function as speed reducing transmissions.
The datasheet lists specific dimensions and screw thread requirements for various models (from 10U to 70U) across two primary ratios: 1:1.5 and 1:2. It includes detailed tables for shaft dimensions, mounting hole sizes, and screw thread specifications, along with a specific example dimension sheet for a model with a ratio of 2.
| Maximum Ratio | 1:2 |
|---|---|
| Drive Shaft Option | Shaft d |
| Backlash | Minimal |
| Shaft End Standard | DIN 332 DS |
| Keyway Standard | DIN 6885/1 |
Yes, the gears can be used as speed reducing transmissions if the drive is applied to shaft d.
The maximum ratio for the U series is 1:2.