Technical data of PRG, from 1 mm dia.
| Machining | Flat surfaces | ||||||||||||
| Diameter range | from 1 mm | ||||||||||||
| Rollers | according to requirement | ||||||||||||
| Standard mount | Cylinder shank (with clamping surface on request) or Morse taper |
Use parameters to be used
| Workpiece oversize | up to 0.01 mm | |
| Tool preclamping | up to 4 mm | |
| Lubrication | emulsion or oil; filtration of the lubricant (<40µm) can improve the surface quality and the tool life | |
| Pre-machining of workpiece | Surface roughness up to 15 µm | |
| Maximum hardness of workpiece | 45HRC | |
| Speed | up to 40 rpm | |
| Feed rate | 0.1 - 0.3 mm/rev; | |
| Return traverse | always in rapid traverse | |
| Dwell time under pressure | 5 - 20 rotations |
| 1 | Mount |
| 2 | Sleeve |
| 3 | Cage |
| 4 | Taper |
| 5 | Roller |
| 6 | not in use |
| 7 | Axis |
| 8 | Dowel pin |
| 9 | Clamping screw for taper |
| 10 | Axis clamping screw |
| 11 | Cup-spring assembly |
Changing components
RollersUnscrew the clamping screw (9) and lift off the cage with the taper toward the front. Unscrew the clamping screw (10) and remove the cage with the axis. Replace rollers in sets.
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Tip
Coat the roller seats with some grease so that the rollers are held in place by the grease during rolling.
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Tip
When replacing the rollers, clean the cage and check it for damage, e.g. run-in marks, rough spots etc.; replace components if necessary. Worn cages or tapers can considerably reduce the service life of the rollers.
Taper Unscrew the clamping screw (9) and lift off the cage with the taper toward the front. Unscrew the clamping screw (10). Remove the cage with the axis. Replace the taper.
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Tip
When replacing the taper, clean the cage and the rollers check them for damage, e.g. run-in marks, rough spots etc. Replace components if necessary. Worn cages or rollers can considerably reduce the service life of the taper.
Cage Unscrew the clamping screw (9) and lift off the cage with the taper toward the front, then unscrew the clamping screw (10). Remove the cage with the axis. Replace the cage.
- Tip When replacing the cage, clean the tool inside and grease it lightly. Dirt particles, in particular chips, reduce the tool life and the quality of the workpieces.
