AMF
X
group picture
group picture

Bore clamp, hydraulic, centric

Single-acting, with spring return,
max. operating pressure 350 bar,
min. operating pressure 30 bar.
lateral compensation per clamp ± 0.25 mm.

Order
no.		 Article no. Clamping force
vertical
[kN] 		Clamping rim height min.
[mm] 		Permissible
horizontal force
[kN] 		Radial force of
sleeve segments
[kN] 		dia. K
[mm] 		L Weight
[g] 		CAD SC
63651 6970-09 4 6 1,2 12 8,8-9,7 10 2600
60293 6970-10 4 6 1,2 12 9,8-10,7 10 2600
60301 6970-11 10 8 3,0 30 10,8-11,9 15 2600
60319 6970-12 10 8 3,0 30 12,0-12,9 15 2600
63677 6970-13 10 8 3,0 30 13,0-13,9 15 2600
60418 6970-14 10 8 3,0 30 14,0-14,9 15 2600
60434 6970-15 26 9 7,7 77 15,0-15,9 17 2800
60525 6970-16 26 9 7,7 77 16,0-16,9 17 2800
60426 6970-17 26 9 7,7 77 17,0-17,9 17 2800
63693 6970-18 26 9 7,7 77 18,0-18,9 17 2800
60616 6970-19 26 9 7,7 77 19,0-19,9 17 2800
60715 6970-20 31 10 9,2 92 20,0-20,9 17 2900
60723 6970-21 31 10 9,2 92 21,0-21,9 17 2900
63719 6970-22 31 10 9,2 92 22,0-22,9 17 2900
60731 6970-23 31 10 9,2 92 23,0-23,9 17 2900
60376 6970-24 31 10 9,2 92 24,0-24,9 17 2900
60384 6970-25 31 10 9,2 92 25,0-25,9 17 2900

Design:

The actuating piston is single-acting. Cylinder body, clamping segments and tensioning bolts from hardened steel, gas-nitrided. Four-part clamping segments are externally serrated.
A Ø 8 H7 centring hole located on the underside for positioning the clamping element. Two fastening screws are included in the supply scope. Oil supply via threaded connection or oil channel in the fixture body.

Application:

The hydraulic bore clamp is preferred for use on workpieces with complex external geometries that must be clamped for machining.
After the clamping segments are applied to single-attachment clamping holes with low depth, a safe 5-sided processing can be performed without difficulty.
Workpieces can be installed or removed automatically with handling devices.

Features:

The tension bolt has the shape of a four-sided pyramid at the coupling point to the clamping sleeve. The clamping sleeve segments have this shape also, thus ensuring contact on the entire surface in every position of the tension bolt. This facilitates a high clamping force and ensures very low wear. Elastic rings hold the clamping segments together and seal them against entry of chips. Depending on the material, the external serration is pressed into the clamping hole with more or less force, thus permitting the required positive fit. The built-in plate springs achieve a maximum pull-down stroke of approx. 0.2 mm.

The tension bolt has a pyramid shape for improved pre-centring of workpieces.

The bore clamp is also the contact surface for the workpiece. The workpiece contact surface is hard-metal coated (µ 0.3), thereby significantly increasing the displacement force.

The eccentric arrangement of the clamping elements is especially suited for clamping workpieces with circumferential contact edge, such as gear and engine housings, oil pans and similar workpieces.

Note:

The lateral force when inserting the workpiece must not exceed the "lateral force" table value. The radial force must be observed.

Please check with us for clamping hardened workpieces or those from GG / GGG.

On request:

Bore clamps for other hole diameters available upon request.

  • dimensions table
    Order
    no.     		Article no. Expansion
    of sleeve
    [mm]     		Piston
    dia.
    [mm]     		Vol.
    [cm³]     		Side load
    (unclamped)
    [N]     		A B ±0.01 C dia. D
    		 E dia. F G H M N P S X ±0.5 Y OR-1
    O-ring
    Order No.
    63651 6970-09 1,4 28 0,5 50 53 75 9,5 8,5 36 9 80 98 31 13 15 62 62 124 260448
    60293 6970-10 1,4 28 0,5 50 53 75 9,5 9,5 36 9 80 98 31 13 15 62 62 124 260448
    60301 6970-11 1,7 32 1,6 150 53 75 14 10,5 36 9 80 98 31 13 19 62 62 124 260448
    60319 6970-12 1,7 32 1,6 150 53 75 14 11,5 36 9 80 98 31 13 19 62 62 124 260448
    63677 6970-13 1,7 32 1,6 150 53 75 14 12,5 36 9 80 98 31 13 19 62 62 124 260448
    60418 6970-14 1,7 32 1,6 150 53 75 14 13,5 36 9 80 98 31 13 19 62 62 124 260448
    60434 6970-15 1,7 40 3,8 200 53 75 16 14,5 36 13 90 115 35 15 24 62 62 124 260448
    60525 6970-16 1,7 40 3,8 200 53 75 16 15,5 36 13 90 115 35 15 24 62 62 124 260448
    60426 6970-17 1,7 40 3,8 200 53 75 16 16,5 36 13 90 115 35 15 24 62 62 124 260448
    63693 6970-18 1,7 40 3,8 200 53 75 16 17,5 36 13 90 115 35 15 24 62 62 124 260448
    60616 6970-19 1,7 40 3,8 200 53 75 16 18,5 36 13 90 115 35 15 24 62 62 124 260448
    60715 6970-20 1,7 42 4,4 300 53 75 16 19,5 36 13 90 115 35 15 28 62 62 124 260448
    60723 6970-21 1,7 42 4,4 300 53 75 16 20,5 36 13 90 115 35 15 28 62 62 124 260448
    63719 6970-22 1,7 42 4,4 300 53 75 16 21,5 36 13 90 115 35 15 28 62 62 124 260448
    60731 6970-23 1,7 42 4,4 300 53 75 16 22,5 36 13 90 115 35 15 32 62 62 124 260448
    60376 6970-24 1,7 42 4,4 300 53 75 16 23,5 36 13 90 115 35 15 32 62 62 124 260448
    60384 6970-25 1,7 42 4,4 300 53 75 16 24,5 36 13 90 115 35 15 32 62 62 124 260448