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Build-in hydraulic cylinder; it can also work with a lock valve and be driven by air pressure.
Radial clamp and axial pull down at the same time, keep the workpiece attaching close to the base surface of the chuck.
Almost no workpiece uplifting displacement.
3 jaw drill chuck which the body with heat treatment and the organization of cylinder pull-down, and fine boring, which guarantee the high clamping precision and durableness, it’s suitable for heavy duty machining.
3 jaw chucks are suitable for drilling, milling, and other machines.

Can work together with multi-plate.

Equipped with Airtight pressure detection function.

Specifications

Model	Jaw stroke (Dia.) (mm)	Chucking Dia. Max.(mm)	Chucking Dia. Min.(mm)	Max. clamping force Pneumatic kN(kgf)	Max. clamping force Hydraulic kN(kgf)	Max. pressure Pneumatic MPa (kgf/cm²)	Max. pressure Hydraulic MPa (kgf/cm²)	Min. pressure kgf/cm²	Air consumption lit(at 6.0 kgf/cm²)	Weight (kg)
SU-303	2	42	4	5.2(530)	12.8(1305)	0.6(6)	1.3(13)	2	0.16	5.7
SU-304	3	60	5	6.7(683)	16.0(1632)	0.6(6)	1.3(13)	2	0.26	7.4
SU-306	5	105	31	18.5(1886)	40.0(4079)	0.6(6)	1.3(13)	2	0.58	18
SU-308	5	132	32	37.0(3773)	80.0(8158)	0.6(6)	1.3(13)	2	1.02	31.5
SU-310	5	163	44	46.2(4710)	100.0(10100)	0.6(6)	1.3(13)	2	2.11	53

* Subject to technical changes.

Model	A(h7)	A1	B	B1	C	D(H6)	E	F	G	H(H6)	J	K	L max.	L min.	M	N	P	Q max.	Q min.	R	S	T	U	V	W	X (p.c.d)	Y
SU-303	122	85	80.5	68	104	28	22	12	3.5	66	M3	3~9	5	1	12	30	7	3.5	2.5	36	15	63	98	M5	4~M8x1.25	46	3~M5x10
SU-304	148	110	101.5	83.5	130	32	24	15	4.5	84	M5	4~9	7	1	17	40	9.5	2.75	1.25	42	20	75.5	110.5	M6	6~M8x1.25	62	6~M5x10
SU-306	206	168	136.5	104	188	35	25	18	6	129	M5	4~11	15	5	30	50	17	15.75	13.25	49	30	104.5	139.5	M10	6~M10x1.5	72	6~M6x12
SU-308	248	210	152	115	230	55	45	18	7	156	M6	4~11	17	7	34	63	20.5	16.25	13.75	71	35	125.5	160.5	M12	6~M10x1.5	95	6~M6x12
SU-310	300	254	181	131	280	65	53	20	7	187	M8	4~13	9	-1	39	74	23	20.75	18.25	85	40	147.5	182.5	M14	6~M12x1.75	115	6~M6x12