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Revolving Tailstock Centres
optimum determination of pressure via color rings

[Live Centres]
Live Centres Types R, RV, GF
The drop-forged hardened steel shank, tapered at the front, is highly practical and
accessible for all lathe work.

The heavy-duty center made of high-tensile, wear-resistant alloy steel is through-
hardened and can be reground as required. To achieve greater stability and maximum
rigidity the rotating center is supported by front and rear bearings.

Because of the large number of rollers with low relative velocity, these precision
bearings are equally suited to both high-speed operations and heavy duty applications.
All bearing seats are grinded.

The pressure relief automatically compensates any thermal expansion of the workpiece
during machining process. This feature protects the bearings in the live center as well
as the machine bearings.

Live Centres Types C, CV
Drop-forged shank made of hardened steel. Rotating spindle made of through-hardened,
alloy steel.

Four-point support for high axial and radial loads. Concentricity 0.005 mm or better.
High speeds in excess of 10000 RPMs.

Double labyrinth seal design. No maintenance and longer service life due to lifetime
lubrication of the roller bearings.

These live centers are designed for CNC machine tools and copying lathes with hydraulic
tailstocks as well as for machining workpieces with small center holes, and precision
machining at ultra-high speeds (grinding machines, testing facilities, etc.)


Revolving Tailstock Centres
tip angle 60°

[Type 652-05R] type 652-05 series R
with pressure indicator for
setting and monitoring
of the optimum pressure
Part No. size MT workpiece
weight
max.kg		 axial
load
max.*		 speed
max.
min-1		 A B C D d
850538 R-3 3 720 500 4000 31 48 85.5 57 25
850539 R-4 4 1200 950 3000 42 61 107.5 70 35
850540 R-5 5 2000 1300 2000 58 81 135 96 50
850541 R-6 6 3400 2500 1000 79 104 187.5 128 70
*) at 100 rpm

[Type 652-25RV] type 652-25 series RV
with extended centre, with
pressure indicator for
setting and monitoring
of the optimum pressure
Part No. size MT workpiece
weight
max.kg		 axial
load
max.*		 speed
max.
min-1		 A B C D
850542 RV-3 3 550 500 4000 42 10 24 12
850543 RV-4 4 900 950 3000 60 12 37 14
850544 RV-5 5 1400 1300 2000 88 15 60 18
850545 RV-6 6 2400 2500 1000 125 19 90 22
*) at 100 rpm

[Type 640 C] type 640 series C
with normal centre
for high speeds
Part No. size MT workpiece
weight
max.kg		 axial
load
max.		 speed
max.
min-1		 A B C D d
850530 C-3 3 750 1000 10000 29 48 85.5 57 22
850531 C-4 4 1400 1750 8000 38 60 107.5 70 30
850532 C-5 5 2500 3000 6000 52 77 135 96 45
850533 C-6 6 3800 4800 4000 74 100 187.5 128 65
with extractor screw and nut
850752 C-3 3 750 1000 10000 29 48 85.5 57 22
850753 C-4 4 1400 1750 8000 38 60 107.5 70 30
850754 C-5 5 2500 3000 6000 52 77 135 96 45
850755 C-6 6 3800 4800 4000 74 100 187.5 128 65

[Type 640 CV] type 640 series CV
with extended centre
for high speeds
Part No. size MT workpiece
weight
max.kg		 axial
load
max.		 speed
max.
min-1		 A B C D d E
850534 CV-3 3 700 1000 10000 32 48 85.5 57 22 10
850535 CV-4 4 1300 1750 8000 46 60 107.5 70 30 12
850536 CV-5 5 1900 3000 6000 72 77 135 96 45 15
850537 CV-6 6 2800 4800 4000 105 100 187.5 128 65 18
with extractor screw and nut
850756 CV-3 3 700 1000 10000 32 48 85.5 57 22 10
850757 CV-4 4 1300 1750 8000 46 60 107.5 70 30 12
850758 CV-5 5 1900 3000 6000 72 77 135 96 45 15
850759 CV-6 6 2800 4800 4000 105 100 187.5 128 65 18




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