- Surfaced hardened body
- Ground tapers conform to DIN 228 AT3
- Through-hardened spindle made out of high-grade steel
- Spindle mounted by two needle bearings
- Thrust ball bearings to accommodate axial loads
- Over-pressure security through disc springs
- Reliable lip seal
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- Morse Tapers no. 1 to 7
- Various metric tapers
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- SM (small) small body, for light pieces and higher turning rates
- ST (standard) for normal rates
- SU (super) for heavy duty loads and low turning rates
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All ROTOR-Centres are manufactured with continuous lubrication. (Klüber
Isoflex Topas NCA52)
Concentricity tolerance needs to be messured according the manual. |
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The Centre can be returned to the manufacturer for reconditioning.
With the ROTOR repair set (spindle, front bearing and seal) you receive
an almost new centre for approximately 30% of the exfactory price.
Selfmade revisions have to be executed by qualified personal and
have to been done exactly as it is written down in the
revision manual. |
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| Problem Answers |
General information and possible causes |
Answers |
| Spindle floating axially |
The axial pressure exerted on the centre is transferred through the
thrust bearing onto spring washer. |
The spindle has to have axial movement. |
| Centre is generation heat |
The spindles of ROTOR Centres are mounted through roller bearings
front and rear. Roller bearings carry more weight and generate higher
temperatures than ball bearings, maximum 120°. |
Change spindle and bearings during routine maintenance?
A relatively high temperature does not harm the bearing. |
| Eccentricity of 60° point |
The concentricity check must agree to drawing 30.0001.23.
The regrind of 60° point in the assembled stage is not possible. |
Check concentricity against drawing 30.0001.23.
Exchange bearings and spindle during maintenance. |
| Burned 60° point |
The size of workpiece centre hole must be large enough for the spindle
to have definite rotation. |
Was the centre hole large enough to accelerate/retard the spindle? |
| Broken 60° point |
The size of workpiece centre hole must be large enough to carry workpiece
weight. |
Did the size of the Centre-hole was large enough? |
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© by ROTOR TOOL GmbH 2005
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