ID Xpansion™ Clamp

Measurements Available: Inch, Metric

ID Xpansion™ Clamps

The ID Xpansion™ clamp is the ideal solution to hold parts on an inside diameter for high density machining on vertical or horizontal machining centers. It can also be used as an expanding mandrel on a lathe.

These machinable clamps are produced in 12L14 steel with black oxide coating in 12 sizes and can hold internal diameters from under 3/16 to almost 10 inches (4.1 to 254mm). #10 manufactured using 7075-T6 aluminum.

The flange diameter of the clamp is held to a close tolerance for precision locating in a machined pocket on work cubes and fixture plates.

The customer machines the mild steel clamp to match the bore of the part ensuring a proper fit. Often times the clamps can be remachined for different size jobs.

The low profile ID Xpansion™ Clamp can hold several parts in one compact area for secondary operations without any clamping interference. They are quickly tightened with a hex key, torque driver or can be mated to hydraulic pull cylinders for automation.

Low Profile
Ideal for Secondary Operations on lathe parts
Easily machined to size on lathe or mill
Excellent for palletized setups
Allows more parts per workcube or fixture plate
Heat-treated and coated screw for long life
Clamp body made of mild steel for machinability
Tighten with hex key or hydraulic pull cylinders
(Drill clearance hole for longer bolt into cylinder)
Longer screws available for hydraulic applications
Longer tapered screws available for each ID size
Tungsten Carbide coating can be added to increase holding force

Clamp Machining and Installation

Inch

Part Number	Model Number		A	B	C	D	E+.000 -.002	F	G+	H*	I	J	Torque (Ft/lbs.)	Holding Force (lbs)	Replacement Tapered Screws
31000	#00	CAD	.42	.30	.24	.12	.787	.29	.16	2-56 on .540 BHC	2-56 x 1/2	.16	0.5	250	31001
31050	#0	CAD	.86	.63	.59	.23	1.170	.49	.28	6-32 on .825 BHC	8-32 x 1	.30	3.6	950	31002
31100	#1	CAD	.98	.75	.59	.23	1.240	.56	.48	6-32 on .910 BHC	1/4-20 x 1 1/4	.50	13.3	1,900	31010
31150	#2	CAD	.98	.75	.59	.23	1.476	.79	.53	6-32 on 1.140 BHC	5/16-18 x 1 1/4	.56	27.6	2,500	31020
31200	#3	CAD	1.13	.88	.69	.25	1.968	1.06	.71	8-32 on 1.550 BHC	3/8-16 x 1 1/2	.71	49.3	4,500	31032
31250	#4	CAD	1.25	1.0	.81	.25	2.205	1.39	.90	8-32 on 1.790 BHC	1/2-13 x 1 1/2	.71	120.0	5,900	31042
31300	#5	CAD	1.56	1.25	1.06	.31	2.736	1.65	1.15	10-32 on 2.200 BHC	5/8-11 x 1 3/4	.79	224.0	10,000	31052
31350	#6	CAD	1.56	1.25	1.06	.31	2.972	2.03	1.15	10-32 on 2.515 BHC	5/8-11 x 1 3/4	.79	224.0	10,000	31052
31400	#7	CAD	1.79	1.48	1.27	.31	4.232	3.06	1.15	1/4-20 on 3.646 BHC	5/8-11 x 2	.79	224.0	10,000	31072
31450	#8	CAD	1.79	1.48	1.27	.31	5.232	4.06	1.15	1/4-20 on 4.648 BHC	5/8-11 x 2	.79	224.0	10,000	31072
31500	#9	CAD	1.79	1.48	1.27	.31	5.232	6.89	1.15	1/4-20 on 4.648 BHC	5/8-11 x 2	.79	224.0	10,000	31072
31550**	#10	CAD	1.79	1.48	1.27	.31	6.000	9.85	1.15	1/4-20 on 5.250 BHC	5/8-11 x 2	.79	125.0	6,000	31072

G+ Minimum diameter the “F” dimension can be machined or turned down to.
H* – (3) Mounting Screws Included. (4) Mounting Screws Included with #9 & #10.
** – Clamp made from 7075-T6 aluminum.

ID Xpansion™ Clamp Machining and Installation

MODEL #00 – #6 ID Xpansion™ Clamps

Expand clamp approximately .003″ over relaxed diameter and machine to fit workpiece bore, either on lathe or mill.
If machining the clamp on a lathe use the nut provided, on the back of the clamp, to tighten the tapered screw. This nut is used only while machining the clamp.
Machine a pocket in the fixture. For close tolerance “E” dimension and drill and tap mounting holes per “H” column. Drill and tap a hole from the “I” column in the center of the pocket for the tapered screw.
A recessed dowel pin may be installed into the flange for additional rigidity if required.
Long length screws available for sizes #00 thru #10. For blind hole app’s, see our Manual Actuators or call for custom screws/other options.
Range of expansion .005 to .025 depending upon size.

MODEL #7-10 ID Xpansion™ Clamps

Locking rings are provided to ensure segments remain rigid while machining clamps to size (#9 and #10 ID’s ship with 2 rings).
Insert supplied ring(s) and tighten drive screw to 40 Ft/Lbs and machine clamp diameter to +.003/.005″ over bore size. Remove ring(s) and test fitment with workpiece. If workpiece fitment is tight, repeat machining process and machine to achieve a close fit to workpiece MMC bore size.
Aggressive material removal is not recommended when machining clamps to size. Suggested machining practice is to spiral down with a .500″ end mill by conventional milling 0.020″ off the desired clamp diameter at 400 SFPM and .001″ per flute and .02 depth per trip around.
Finish final diameter at 700 SFPM using same .001″ per flute feed and .250″ depth and climb mill.

Metric

Part Number	Model Number		A	B	C	D	E+.000 -.050	F	G+	H*	I	J	Torque (N.m.)	Holding Force (N.)	Replacement Tapered Screws
38000	#00	CAD	10.7	7.6	6.1	3.0	20.0	7.4	4.1	M2 on 13.7 BHC	M2x12	4.1	.70	1,113	38001
38050	#0	CAD	21.8	16.0	15.0	5.9	29.72	12.4	7.1	M3 on 20.95 BHC	M4x25	7.2	5.00	4,228	38002
38100	#1	CAD	24.9	19.0	15.0	5.9	31.5	14.2	12.2	M3 on 23.1 BHC	M6x30	11.2	17.00	8,455	38010
38150	#2	CAD	24.9	19.0	15.0	5.9	37.5	20.0	13.5	M3 on 29.0 BHC	M8x30	13.2	34.00	11,125	38020
38200	#3	CAD	28.6	22.2	17.5	6.4	50.0	27.0	18.0	M4 on 39.4 BHC	M10x35	16.3	60.00	20,025	38032
38250	#4	CAD	31.8	25.4	20.6	6.4	56.0	35.3	23.0	M4 on 45.5 BHC	M12x40	20.3	150.00	26,255	38042
38300	#5	CAD	39.6	31.8	27.0	7.9	69.5	42.0	29.3	M5 on 55.9 BHC	M16x45	21.4	280.00	44,500	38052
38350	#6	CAD	39.6	31.8	27.0	7.9	75.5	51.5	29.3	M5 on 63.9 BHC	M16x45	21.4	280.00	44,500	38052
38400	#7	CAD	45.5	37.6	32.3	7.9	107.5	77.7	29.3	M6 on 92.6 BHC	M16x50	19.3	280.00	44,500	38072
38450	#8	CAD	45.5	37.6	32.3	7.9	132.9	103.0	29.3	M6 on 118.06 BHC	M16x50	19.3	280.00	44,500	38072
38500	#9	CAD	45.5	37.6	32.3	7.9	132.9	175.0	29.3	M6 on 118.06 BHC	M16x50	19.3	280.00	44,500	38072
38550**	#10	CAD	45.5	37.6	32.3	7.9	152.4	250.2	29.3	M6 on 133.35 BHC	M16x50	19.3	170.00	26,000	38072

G+ Minimum diameter the “F” dimension can be machined or turned down to.
H* – (3) Mounting Screws Included. (4) Mounting Screws Included with #9 & #10.
** – Clamp made from 7075-T6 aluminum stock.

MODEL #00 – #6 ID Xpansion™ Clamps

Expand clamp approximately .1mm over relaxed diameter and machine to fit workpiece bore, either on lathe or mill.
If machining the clamp on a lathe use the nut provided, on the back of the clamp, to tighten the tapered screw. This nut is used only while machining the clamp.
Machine a pocket in the fixture. For close tolerance “E” dimension and drill and tap mounting holes per “H” column. Drill and tap a hole from the “I” column in the center of the pocket for the tapered screw.
A recessed dowel pin may be installed into the flange for additional rigidity if required.
Long length screws available for sizes #0 thru #10. For blind hole app’s, see our Manual Actuators or call for custom screws/other options.
Range of expansion .13 to .64mm depending upon size.

MODEL #7-10 ID Xpansion™ Clamps

Locking rings are provided to ensure segments remain rigid while machining clamps to size (#9 and #10 ID’s ship with 2 rings).
Insert supplied ring(s) and tighten drive screw to 55 N.m. and machine clamp diameter to +.08/.13mm over bore size. Remove ring(s) and test fitment with workpiece. If workpiece fitment is tight, repeat machining process and machine to achieve a close fit to workpiece MMC bore size.
Aggressive material removal is not recommended when machining clamps to size. Suggested machining practice is to spiral down with a 12mm end mill by conventional milling .5mm off the desired clamp diameter at 2 m/s and 0.03mm per flute and .0.5mm depth per trip around.
Finish final diameter at 3.6 m/s using same 0.04mm per flute feed and 6mm depth and climb mill.

Applications

: @sutcliffe_mechanical – Trying out some ID clamps today. I was kinda scared. Not sure if the part was gonna move or not. Everything worked out great. Cant wait to use more of these in the future.

: @sutcliffe_mechanical – Trying out some ID clamps today. I was kinda scared. Not sure if the part was gonna move or not. Everything worked out great. Cant wait to use more of these in the future.

: Jonathan Rubio – MiteeBite Products Facebook Community – Thanks for the group add. This place is cool for inspiration. Heres an ID clamp fixture I’ve used in the past.