The majority of the Dyna-Force® clamp is below the surface of the fixture which provides excellent clamp support and makes for a very low profile. The clamp jaw slides on an angle for positive downforce.The clamp jaw is available with smooth or serrated faces.The support surface of the Dyna-Force® clamp can be installed flush with the fixure plate or raised to hold the workpiece off the fixture, enabling drill-through.

Incredible Clamping and Hold Down Power
Low Profile, Compact Design
17-4 PH Stainless Steel
Smooth or Serrated
Stainless steel screws and retaining rings are available for EDM applications

PATENT NO. 5964458

Metric

Part No.	Clamp Jaw† & Hardiness	A*	B	C	D	E	F	— Min	G Opt.	— Max	Clamp Travel	Drive Screw	Key Size	Max Torque	Holding Force	Replacement Insert**
28314	Smooth 34RC	20.00	24.90	19.00	19.90	4.50	13.50	3.25	5.00	6.75	2.0	M6x12mm	5mm	7.3 (Ft/Lbs) 9.9 (N.m)	2,000 (Lbs) 8896 (N.)	28480 (smooth)
28318	Serrated 44RC	20.00	24.90	19.00	19.90	4.50	13.50	3.25	5.00	6.75	2.0	M6x12mm	5mm	7.3 (Ft/Lbs) 9.9 (N.m)	2,000 (Lbs) 8896 (N.)	28482 (serrated)
28320	Smooth 34RC	25.00	29.90	24.00	24.90	5.00	15.00	4.50	6.50	8.25	2.2	M8x16mm	6mm	17.6 (Ft/Lbs) 23.9 (N.m)	2,600 (Lbs) 11565 (N.)	28484 (smooth)
28322	Serrated 44RC	25.00	29.90	24.00	24.90	5.00	15.00	4.50	6.50	8.25	2.2	M8x16mm	6mm	17.6 (Ft/Lbs) 23.9 (N.m)	2,600 (Lbs) 11565 (N.)	28486 (serrated)
28324	Smooth 34RC	30.00	37.90	29.00	29.90	7.00	20.00	4.50	7.50	10.75	3.8	M10x18mm	8mm	35.3 (Ft/Lbs) 41.9 (N.m)	3,200 (Lbs) 14234 (N.)	28488 (smooth)
28328	Serrated 44RC	30.00	37.90	29.00	29.90	7.00	20.00	4.50	7.50	10.75	3.8	M10x18mm	8mm	35.3 (Ft/Lbs) 41.9 (N.m)	3,200 (Lbs) 14234 (N.)	28490 (serrated)

†Smooth jaw only will have relief cut
*Body diameter
**Includes screw and retaining ring

Dyna-Force® Installation

Bore ℄ of the hole “L” distance from edge of workpiece.
Drill and tap “H” to mount clamp in pocket.
Machine counter bore if recessing clamp into fixture.
Provide a back stop to locate the part.

NOTES:

“N*” – To have rest pad flush with fixture, use the dimension provided. To have the
rest pad above the fixture surface, reduce the depth accordingly.
For dimensions I and J, use a tolerance of +.1/-0mm. For dimension L and O,
use +.1/-.1mm.

Height of Jaw in Relation to ℄ of bore
from edge of workpiece.

Height of Jaw G	20mm L	25mm L	30mm L
3.25	5.91
3.50	5.77
3.75	5.62
4.00	5.48
4.25	5.33
4.50	5.19	6.81	8.78
4.75	5.05	6.66	8.63
5.00	4.90	6.52	8.49
5.25	4.76	6.37	8.35
5.50	4.61	6.23	8.20
5.75	4.47	6.08	8.06
6.00	4.32	5.94	7.91
6.25	4.18	5.80	7.77
6.50	4.03	5.65	7.62
6.75	3.89	5.51	7.48
7.00		5.36	7.34
7.25		5.22	7.19
7.50		5.07	7.05
7.75		4.93	6.90
8.00		4.78	6.76
8.25		4.64	6.61
8.50			6.47
8.75			6.33
9.00			6.18
9.25			6.04
9.50			5.89
9.75			5.75
10.00			5.60
10.25			5.46
10.50			5.31
10.75			5.17

Example: 20mm clamp when CL of bore is 4.90mm from edge of workpiece
(L – see drawing on left): jaw height is 5.00mm

Part No.	H	I	J	K	L	M	N	O
28314	M5 or 10-24	25.00	20.00	6.00	4.90	5.00	4.50	20.00
28318	M5 or 10-24	25.00	20.00	6.00	4.90	5.00	4.50	20.00
28320	M6 or 1/4-20	30.00	25.00	6.50	5.65	6.00	5.00	25.00
28322	M6 or 1/4-20	30.00	25.00	6.50	5.65	6.00	5.00	25.00
28324	M8 or 5/16-18	38.00	30.00	8.00	7.05	7.50	7.00	30.00
28328	M8 or 5/16-18	38.00	30.00	8.00	7.05	7.50	7.00	30.00