Mitee-Bite I.D. Expansion Clamps

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

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	.42	.30	.24	.12	.787	.29	.16	2-56 on .540 BHC	2-56 x 1/2	.16	0.5	250	31001
31050	#0	.86	.63	.59	.23	1.170	.49	.28	6-32 on .825 BHC	8-32 x 1	.30	3.6	950	31002
31100	#1	.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	.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	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	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	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	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	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	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	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	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.

D Xpansion™ Clamp Machining and Installation

MODEL #00 – #6 ID Xpansion™ Clamps

Expand clamp approximately .002 to .003. Over relaxed diameter and machine to fit to workpiece bore, either on lathe or mill.
If machining the clamp on a lathe, use the nut povided 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 the 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.
Range of expansion .005 to .025 (.13 to .64mm) depending upon size.

MODEL #7-10 ID Xpansion™ Clamps

Locking ring provided to ensure segments remain rigid while machining clamps to size. (#9 and #10IDs ship with 2 rings)
Insert ring and tighten drive screw, machine clamp to bore size. Remove ring to clamp workpiece.
Aggressive material removal not recommended when machining clamps to size.

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	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	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	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	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	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	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	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	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	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	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	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	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 .0508mm to .0762mm 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 the 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.
Range of expansion .013mm to .63mm depending upon size.

MODEL #7-10 ID Xpansion™ Clamps

Locking ring provided to ensure segments remain rigid while machining clamps to size.
Insert ring and tighten drive screw, machine clamp to bore size. Remove ring to clamp workpiece.
Aggressive material removal is not recommended when machining clamps to size.