Berg Clamping systems Tool Clamping - SSKV

Application
Berg SSKV gripper are primarily designed for drawing in and ejecting steep taper tooling provided with retention knobs internationally standardized as per DIN, ANSI, MAS, JIS and ISO which allow fast automatic tool changes. Actuation is mechanical, hydraulic, electro-mechanical
or pneumatic.

Design features
SSKV clamping sets have six collets held by an annular spring which allows a rocking movement for clamping the steep taper tools. During clamping the taper of the centrally positioned drawbolt increases the actuation force, thereby generating a much higher clamping force at the collets. The special tribolic coating guarantees the highest possible
constant clamping force. The clamping set is maintenance free. A locking bolt permits infinitely variable positioning and fixation of the clamping set in the Z axis. No special tools are required for assembly and disassembly.
#workholding

Berg Gripper SSKE - KH

						SSK gripper are primarily designed for drawing in and ejecting steep taper tooling provided with retention knobs internationally standardized as per DIN, ANSI, MAS, JIS and ISO which allow fast automatic tool changes. SSK gripper are not only suitable for clamping tools, but also workpieces or workpiece holders and pallets on machining centres milling machines boring machines grinding centres special purpose machines and handling systems Grippers in special designs are available for other shapes in addition to the types for standardized clamping bolts. Actuation is mechanical, hydraulic, electro-mechanical or pneumatic. Design features SSK gripper comprise four clamping segments which are captively connected to the draw bolt to ensure easy assembly. They transfer the clamping force positively from the draw bolt to the retention knob. It is possible to clamp tool shanks of the same steep taper with retention knobs of different standards using different gripper in a uniformly designed spindle. Refer to the following table detailing the assignments. The version SSKS.. was developed for very high spindle rotational speeds. Their external design is identical to that of the SSK version of the same type. Gripper of the series SSK..JBS I(II) are always designed for the high-speed version. In comparison to the very high clamping forces of the SSK, SSKE and SSKF series, the SSKE - KH series are designed in favour of a considerably shorter axial stroke according to the generally common values. For new spindle designs the gripper style SSKF is recommended.. #workholding

Berg Clamping systems Tool Clamping - HSH

Application
For HSC workpiece machining the clamping forces according to DIN 69893 are frequently no longer sufficient. The idea to create an extremely rigid connection between the tool and spindle by placing the clamping element directly against the internal spindle contour, reached its design limits, due to the cross sections and surfaces available for the force transmission. With their HSH-gripper, BERG-Spanntechnik have met the requirements for clamping forces notably exceeding the values specified in DIN 69893. HSH-gripper are intended for the clamping of hollow shank tooling with central cooling lubricant supply.

Design features
HSH-gripper consist of six sturdy clamping claws, which, held by means of an annular spring, execute a tilting movement when the hollow shank tooling is changed and removed. During clamping, the centrally arranged draw-bolt transfers the actuation force onto the clamping segments, where it acts as a direct clamping force without further force deviation. The generously dimensioned face of the draw-bolt has been provided for tool ejection. The constructive design of the clamping element offers a large clamping reserve. The internal spindle contour is easy to manufacture.

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Berg Clamping systems Tool Clamping - HK / HKR

Application
Clamping sets of the type HKR are designed for clamping hollow shank tools according to DIN 69893.
Design features
HKR clamping sets have six collets held by an annular spring which allows a rocking movement for inserting and removing the hollow shank tools. During clamping the taper of the centrally positioned draw-bolt increases the actuation force, thereby generating a much higher clamping force at the collets. The special tribolic coating guarantees the highest possible constant clamping force. The clamping set is maintenance free. A locking bolt permits infinitely
variable positioning and fixation of the clamping set in the Z axis. No special tools are required for assembly and disassembly. The spindle has an easy to produce interior contour. The HKR-gripper has a built-in snap-hold feature allowing a toll to be hold securely in the spindel even in unclamped position.
Ordering example
HK 38
HKR 38
Delivery scope
Clamping set according to data sheet
Comments
When clamping without a tool the draw-bolt of the clamping set is supported at the end of the total stroke hT in the depth ‘m’ inside the spindle. If no possibility for the stop is provided at this point, it has to occur at a different point.

Gripper HKR

Type	d2	a	b	c	e	f	j	k	l	m	n	s	hT	hS	FB max kN	FH N	FS max kN	SW1	SW2	MA SW2
HKR 24	24	17	21,0	11	7,5	M 7 x 1	22,0	30	21,0	49	13,5	8,3	7,0	5,0	1,2	65	6	12	3	8
HKR 30	30	21	25,5	14	9	M 8 x 1	24,0	44	38,0	70	22,5	8,3	8,5	5,0	1,7	80	7	13	4	10
HKR 38	38	26	31,0	16	11	M 10 x 1	30,0	45	35,0	74	21,0	10,3	9,0	5,5	3,2	100	15	17	5	15
HKR 48	48	34	39,8	23	13	M 12 x 1	29,0	52	44,5	82	25,0	10,3	10,0	6,4	4,7	130	22	24	6	30
HKR 60	60	42	49,3	26	15	M 14 x 1,5	29,0	65	59,0	98	29,5	12,8	11,0	7,4	6,6	190	35	30	6	40
HKR 75	75	53	62,4	30	17	M 16 x 1,5	34,5	80	74,0	119	34,5	12,8	12,2	8,0	11,0	240	52	36	8	50