MicroCentric Air Chucks

MicroCentric Blank Top Jaws are manufactured to extremely close tolerances to assure proper fit onto MicroCentric chucks.

Blank jaws are typically machined on the chuck under load to suit the workpiece to be clamped. Detailed instructions on the design and preparation of top jaws is given in MicroCentric's installation and operating manual.

Steel jaw blanks can be carburized after rough machining, and then finish ground on the chuck.

Blank jaws are available in other configurations and materials. Contact our sales department for additional information.

MicroCentric specializes in designing and manufacturing custom top jaws for specific workpiece and machine applications. Fax a drawing of your part and we will prepare a quotation for custom top jaws, or we can make recommendations on top jaw design for your application.

Chuck	Jaw Model	Material	A	B	C	Weight*
3 inch	3-100A	2024	.75"	1.55"	1.00"	.1 lb
			19.1mm	39.4mm	25.4mm	.05 kg
	3-100S	1018	.75"	1.55"	1.00"	.3 lb
			19.1mm	39.4mm	25.4mm	.13 kg
	3-200S	1018	.75"	1.55"	2.00"	.6 lb
			19.1mm	39.4mm	50.8mm	.27 kg
HST3	V3-100A	2024	.75"	1.52"	1.00"	.1 lb
			19.1mm	38.6mm	25.4mm	.05 kg
	V3-100S	1018	.75"	1.52"	1.00"	.3 lb
			19.1mm	38.6mm	25.4mm	.13 kg
	V3-150S	1018	.75"	1.52"	1.50"	.4 lb
			19.1mm	38.6mm	38.1mm	.18 kg
4 inch	4-100A	2024.	.75"	1.93"	1.00"	.1 lb
HST4			19.1mm	49.0mm	25.4mm	.05 kg
	4-200A	2024	.75"	1.93"	2.00"	.2 lb
			19.1mm	49.0mm	50.8mm	.10 kg
	4-100S	1018	.75"	1.93"	1.00"	.4 lb
			19.1mm	49.0mm	25.4mm	.18 kg
	4-150S	1018	.75"	1.93"	1.50"	.4 lb
			19.1mm	49.0mm	38.1mm	.18 kg
	4-200S	1018	.75"	1.93"	2.00"	.7 lb
			19.1mm	49.0mm	50.8mm	.32 kg
6 inch	6-100A	2024	1.00"	2.96"	1.00"	.3 lb
HST6			25.4mm	75.2mm	25.4mm	.14 kg
	6-200A	2024	1.00"	2.96"	2.00"	.5 lb
			25.4mm	75.2mm	50.8mm	.23 kg
	6-300A	2024	1.00"	2.96"	3.00"	.7 lb
			25.4mm	75.2mm	76.2mm	.32 kg
	6-100S	1018	1.00"	2.96"	1.00"	.7 lb
			25.4mm	75.2mm	25.4mm	.32 kg
	6-150S	1018	1.00"	2.96"	1.50"	1.1 lb
			25.4mm	75.2mm	38.1mm	.5 kg
	6-200S	1018	1.00"	2.96"	2.00"	1.5 lb
			25.4mm	75.2mm	50.8mm	.68 kg
	6-300S	1018	1.00"	2.96"	3.00"	2.2 lb
			25.4mm	75.2mm	76.2mm	1.0 kg
8 inch	8-200A	2024	1.50"	3.95"	2.00"	1.1 lb
			38.1mm	100.3mm	50.8mm	.50 kg
	8-300A	2024	1.50"	3.95"	3.00"	1.5 lb
			38.1mm	100.3mm	76.2mm	.68 kg
	8-200S	1018	1.50"	3.95"	2.00"	2.9 lb
			38.1mm	100.3mm	50.8mm	1.3 kg
	8-300S	1018	1.50"	3.95"	3.00"	4.3 lb
			38.1mm	100.3mm	76.2mm	1.9 kg
10 inch	10-200A	2024	1.50"	4.95"	2.00"	1.2 lb
			38.1mm	125.7mm	50.8mm	.55 kg
	10-300A	2024	1.50"	4.95"	3.00"	1.8 lb
			38.1mm	125.7mm	76.2mm	.82 kg
	10-200S	1018	1.50"	4.95"	2.00"	3.6 lb
			38.1mm	125.7mm	50.8mm	1.6 kg
	10-300S	1018	1.50"	4.95"	3.00"	5.3 lb
			38.1mm	125.7mm	76.2mm	2.4 kg
12 inch	12-200A	2024	1.50"	5.72"	2.00"	1.5 lb
			34.1mm	145.3mm	50.8mm	.68 kg
	12-200S	1018	1.50"	5.72"	2.00"	4.3 lb
			34.1mm	145.3mm	50.8mm	1.9 kg
	12-300S	1018	1.50"	5.72"	3.00"	6.4 lb
			34.1mm	145.3mm	76.2mm	2.9 kg

*Weights are per piece

Pie shaped jaws provide full circle contact with the workpiece. Pie Jaws are recommended for fragile and thin walled parts which are subject to distortion during clamping.

Blank pie jaws are available in other configurations and materials. Contact our sales department for additional information.

Chuck	Jaw Model	Material	A	B	Bore	Weight*
3 inch	3-101A	2024	3.18"	1.00"	.62"	.6 lb
			80.6mm	25.4mm	15.1mm	.27 kg
	3-101S	8620	3.18"	1.00"	.62"	1.8 lb
			80.6mm	25.4mm	15.1mm	.82 kg
HST3	V3-101A	2024	3.05"	1.00"	.62"	.5 lb
			77.5mm	25.4mm	15.1mm	.23 kg
	V3-101S	8620	3.05"	1.00"	.62"	1.6 lb
			77.5mm	25.4mm	15.1mm	.73 kg
4 inch	4-101A	2024	3.95"	1.00"	.62"	1.0 lb
HST4			100.3mm	25.4mm	15.1mm	.45 kg
	4-201A	2024	3.95"	2.00"	.62"	2.0 lb
			100.3mm	50.8mm	15.1mm	.9 kg
	4-101S	8620	3.95"	1.00"	.62"	2.9 lb
			100.3mm	25.4mm	15.1mm	1.3 kg
	4-151S	8620	3.95"	1.50"	.62"	4.3 lb
			100.3mm	38.1mm	15.1mm	2.0 kg
6 inch	6-101A	2024	5.95"	1.00"	.88"	2.4 lb
HST6			151.1mm	25.4mm	22.4mm	1.1 kg
	6-201A	2024	5.95"	2.00"	.88"	4.8 lb
			151.1mm	50.8mm	22.4mm	2.2 kg
	6-101S	8620	5.95"	1.00"	.88"	7.0 lb
			151.1mm	25.4mm	22.4mm	3.2 kg
	6-151S	8620	5.95"	1.50"	.88"	10.4 lb
			151.1mm	38.1mm	22.4mm	4.7 kg
	6-201S	8620	5.95"	2.00"	.88"	13.9 lb
			151.1mm	50.8mm	22.4mm	6.3 kg
8 inch	8-201A	2024	7.95"	2.00"	1.25"	8.8 lb
			201.9mm	50.8mm	31.8mm	4.0 kg
	8-201S	8620	7.95"	2.00"	1.25"	25.2 lb
			201.9mm	50.8mm	31.8mm	11.5 kg
10 inch	10-201A	2024	9.95"	2.00"	1.25"	14.1 lb
			252.7mm	50.8mm	31.8mm	6.4 kg
	10-201S	8620	9.95"	2.00"	1.25"	40.9 lb
			252.7mm	50.8mm	31.8mm	18.6 kg

*Weights are per set

Jaw turning fixtures simulate the locating pattern of standard air chucks. They are used to rough turn blank top jaws off the chuck. It is recommended that jaws be finished bored on the chuck for best accuracy.

The clamping position of the jaw turning fixture is set in the middle of the chuck's stroke. Other positions are available upon request. Specify chuck model when ordering.

Chuck	Fixture Model	Outside Dia.	Thickness
3 inch	JTF-3	3.25"	.50"
		82.5mm	12.7mm
HST3	JTF-3V	3.25"	1.20"
		82.5mm	30.5mm
4 inch	JTF-4	4.25"	1.00"
		108mm	25.4mm
6 inch	JTF-6	6.25"	1.00"
		158.8mm	25.4mm
8 inch	JTF-8	8.5"	1.25"
		216mm	31.7mm
10 inch	JTF-10	10.0"	1.75"
		254mm	44.5mm

QC jaw turning fixtures mirror the locating pattern of a QC chuck. They are used to rough and/or finish blank QC top jaws off-line, maximizing your machine's production capacity.

The clamping position of the jaw turning fixture is set in the middle of the chuck's stroke. Other positions are available upon request.

Chuck	Model	Outside dia.	Thickness
4 inch	QC/JTF-4	4.125"	1.281"
		104.8mm	32.5mm
6 inch	QC/JTF-6	6.50"	1.125"
		165.1mm	28.6mm
8 inch	QC/JTF-8	7.95"	1.25
		201.9mm	31.7mm
10 inch	QC/JTF-10	9.95"	1.25
		252.7mm	31.7mm

QC Blank Top Jaws are made from A-2 tool steel. They feature finished ground tapered locating holes, and can be rough and finish bored on a QC chuck or QC jaw turning fixture.

Other QC Blank Jaw configurations including pie-shaped are quoted on request.

*Chuck*	*Model*	*Material*	A	B	C	Weight*