Special Use Clamps
Centering Clamp, Large Bore – 3 Point Contact
Bore clamp with 3 points used for concentric positioning the ID of a bore, internal clamping expands radially to center the bore. Great for engine blocks! Capable of moving a part approximately 0.100” after the part is placed over the center mandrel. The clamping points retract for easy loading, then expand hydraulically to center the bore. Positional repeatability of ±.001”. May be manifold mounted as shown or purchase the optional Mounting Plate for bolt-down or access to porting when mounting. Double Acting
Fits bore sizes from 2.13-5.12”. Normally used with other clamps to secure the part. Requires the use of fixed stops and or additional clamps to resist direct rotational torque.
Clamping Range Ø
ILS158207 REV B
Oil Capacity (cu. in.) Extend Retract
Clamp Force at 5000 psi (lbs.)
Clamping Range Ø (in.)
Repeatability ± (in.)
Model No.
Clamping Points
Weight (lbs.)
E-4
Double Acting (D/A) Cylinders actuated hydraulically both directions. 15-8219-01 2520 2.13 - 2.44 15-8221-01 2.40 - 2.72
.12 .08
15-8224-01 15-8226-01
2.68 - 2.99 2.99 - 3.31 3.27 - 3.58 3.54 - 3.85 3.86- 4.29 4.29 -4.72 4.69 - 5.12
3.87
3
.001
15-8229-01 3930
.21 .12
15-8231-01 15-8234-01
7.57 7.94 8.32
.47 .23
15-8237-01 6300
15-8241-01
ØC -.015
3X Y
V Stroke
3X ØW
ØA
3X S Hex
K
P
G Thread
R
3X L
N
Q
H
ØD
J
ØE
ØM
4X F
B
Pressure (psi)
B
Clamp Port
*Clamp force is the specified force divided by the number of clamping points 1/3 force per point. **Normally used with other clamps to secure the part. Requires the use of fixed stops and or additional clamps to resist direct rotational torque.
Unclamp Port
B B
T
ILS158208 REV B
Model No. A B C D E
F
GHJKLMNPQRS T VWY
15-8219-01 15-8221-01 15-8224-01 15-8226-01 15-8229-01 15-8231-01 15-8234-01 15-8237-01 15-8241-01
2.122 2.398 2.673 2.988 3.264 3.539 3.854 4.287 4.681
.6297 .6293
1.77 .445
1.575 M6-1.0 x .47
.315
2.56 1.77 1.77 N/A 2.24 .10 N/A .39 .661 .16 .47 .90
M6
.236 .9840 .9835 2.126 M8-1.25 x .63 .354 3.032.21 2.36 1.61 2.68 .12 .02 .43 .866 .21 .55 1.28
2.56 .614
1.2595 1.2589 2.638 M10-1.5 x .79 M8 .394 3.582.52 2.91 1.85 3.15 .14 .1 .51 1.063 .27 .71 1.67
3.35 .752
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