OVEKAV
Reactable compensating chucks
"Complete machining in one clamping operation"
The clamping systems for grinding machines are designed for shaft-type workpieces between centers. These main chucks consist of a two-part base unit design with a center point and a displaceable compensating jaw chuck. The workpieces are held between centers and clamped, with compensation, by the extended jaw chuck. In this position, The workpieces are then ground in this position. When open, the chuck can be moved back against the spindle by up to 50 mm. This movement releases the previous clamping point, which can also be ground. Here, the workpiece drive is realized either by frictional engagement between the center point and the workpiece or by a driver which can engage the workpiece. With these clamping systems, workpieces can thus be completely finished-ground in one clamping operation.
Technical data
4OVEKAV 145-12
| Type | Item | Reactable Stroke (mm) | Number of Jaws | Stroke per Jaw (mm) | Clamping Force max.(kN) | Weight (kg) | Speed max. (1/min) | Outer-ø (mm) |
| 4OVEKAV 145-12 | SX1002053 | 12 | 4 | 1.5 | 20 | 12 | 500 | 145 |
3OVEKAV 180-35
| Type | Item | Reactable Stroke (mm) | Number of Jaws | Stroke radial (mm) | Clamping Force max.(kN) | Weight (kg) | Speed max. (1/min) | Outer-ø (mm) | |
| 1* | 3OVEKAV 180-35 | SX1004843 | 35 | 3 | 2.5 | 20 | 28 | 3500 | 180 |
| 2* | 3OVEKAV 180-35 | SX1004910 | 35 | 3 | 2.5 | 20 | 29 | 3500 (5000**) | 180 |
| 3* | 3OVEKAV 180-35 | SX1023879 | 35 | 3 | 2.5 | 20 | 29 | 3500 | 180 |
4OVEKAV 220 / 270
| Type | Item | Reactable Stroke (mm) | Number of Jaws | Stroke per Jaw (mm) | Clamping Force max.(kN) | Weight (kg) | Speed max. (1/min) | Outer-ø (mm) |
| 4OVEKAV 270-30 | SX1009022 | 30 | 4 | 2 | 50 | 60 | 500 | 270 |
| 4OVEKAV 220-40 | SX1009787 | 40 | 4 | 2 | 35 | 48 | 500 | 220 |
| 4OVEKAV 220-45 | SX1022610 | 45 | 4 | 2 | 35 | 45 | 500 | 220 |
6OVARZV 448-50
| Type | Item | Reactable Stroke (mm) | Number of Jaws | Stroke per Jaw (mm) | Clamping Force max.(kN) | Weight (kg) | Speed max. (1/min) | Outer-ø (mm) |
| 6OVARZV 448-50 | SX1020481 | bis 100 | 6 | 5 | 88 / (125) | 326 | 400 | 270 |
Application: large workpieces
- machining between centers
- Complete processing of the external geometry
- Suitable for large workpieces
- Clamping diameter up to 300 mm
Functions & Fields of Application
- Hydraulically actuated compensating chuck for clamping between centers
- Displaceable chuck
- 2-, 3-, 4- and 6-jaw versions in varied sizes
- In the main, designed for grinding machines
- Special versions for combined operations of grinding and hard-turning operations
Advantages
- Hydraulic compensation
- Patented oil circulating lubrication
- Maintenance-free
- The axial displacement allows the grinding of the initial clamping position
- Length of displacement up to 100 mm
With patented circulating lubrication!
The hydraulically actuated chuck series OVEKAV is equipped with the patented EP1 190 815 circulation lubrication. All internal chuck components are actively lubricated during each clamping process. With virtually maintenance-free chucks, this results in minimal lifecycle costs. Downtimes in production due to malfunctions of the clamping system are eliminated.
4 OVEKAV 145-12 So
Example: small camshaft
- Grinding of the cam geometry and all outside diameters
- Driving of the workpiece during grinding utilizing a frictional connection between the center point and the workpiece
3 OVEKAV 180-35 So
Example: CTV gear shaft
- Grinding of the complete outside contour
- Integrated face driver for driving the workpiece while the compensating chuck is in a retracted position
4 OVEKAV 220-40 So
Example: Automotive crankshaft
- Grinding of crankpins and main bearing
- The counter spindle is mostly equipped for alternating clamping during the grinding of the crankshaft end diameters
6 OVARZV 448-50 So
Example: Large crankshaft
- Grinding of crankpins and main bearing
- When grinding the crankshaft end diameter with a retracted chuck, the opposite side remains clamped and drives the workpiece
- Reversing of the clamping situation for the grinding of the opposite end diameter of the crankshaft
![[Translate to English:] OVEKA Präzisions-Ausgleichsfutter](/fileadmin/_processed_/5/8/csm_oveka_titelbild_4cc2650746.jpg "OVEKA")
OVEKA
Precision compensating chuck for demanding shaft-type workpieces
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SAP Clamping ring for grinding between centers