Four Jaw Hand Operated Independent Chuck

The MTPL four-jaw chuck boasts several key attributes that set it apart from other four-jaw independent chucks on the market.

To begin with, the chuck body is meticulously crafted from forged medium-carbon steel, a material that undergoes a process of hardening and tempering to ensure both longevity and structural integrity. The base jaw slots within the body are precision-ground to exacting tolerances, enabling a great sliding fit. This precision engineering guarantees a play-free operation, remarkable load-bearing capability, and optimal wear resistance.

What truly distinguishes MTPL’s independent four-jaw chuck system is the provision of separate jaws and reversible hard jaws. This design feature allows the flexibility to employ specialised hard jaws tailored to specific components.

The hard jaws are affixed to the base jaws via a tongue-and-tenon arrangement, enabling them to securely grip a wide range of components, whether on their outer diameter or inner diameter.

Furthermore, the base jaws are meticulously produced from alloy steel and subjected to case hardening. They are designed to be deeper and wider, thereby providing substantial bearing areas with reduced unit bearing pressure. This design enhancement significantly extends the chuck’s operational lifespan.

Another notable feature is the incorporation of square threads on the screws and the undersides of the base jaws. These threads engage more extensively, resulting in efficient transmission and conversion of applied torque. The screws themselves undergo heat treatment to prevent breakage, addressing a common concern in commercial-quality chucks.

Model		34-06	34-07	34-08	34-09	34-10	34-11	34-12	34-13	34-14
Size		250	315	400	500*	630*	800*	900*	1000*	1200*
Aø		250	315	400	500	630	800	900	1000	1200
Bø		68	92	130	170	245	385	380	380	380
C		83	86	98	98	108	140	140	140	140
C1		95	98	110.5	110.5	119	155	155	155	145
C4		146	158	175	185.5	199	265	280	280.5	280
Eø H8		235	300	380	460	580	710	710	710	710
F		7	7	7	7	6	10	10	10	10
G PCD		200	250	315	400	520	660	660	660	660
H		4 x M16	4 x M20	4 x M 20	4 x M24	4 x M24	S x M24	8 x M24	8x M24	8 x M24
J		24.5	25	38.5	35.5	38	35	35	35	35
SW		14	14	17	17	17	24	24	24	24
U H12		14	18	18	22	22	22	22	22	22
V		23	30	30	37	37	40	40	40	40
W		25	30	30	38	38	38	38	38	38
X		9	12	12	16	16	16	16	16	16
X1		42	47	60	64	160	127	180	230	330
d		8 x M14	8 x M16	S x M16	8 x M20	8 x M20	12 x M20	12 x M20	12 x M20	12 x M20
g		38	45	50	50	60	60	60	60	60
n		35	40	50	60	60	170	200	200	200
o g6		12	12	12	12	12	22	22	22	22
o1		23.5	26	31	36	36	96	111	111	111
q H7		16	16	16	16	16	22	22	22	22
t1		93	110	130	160	195	255	300	300	300
Outer Clamping	Max	250	315	400	500	630	800	900	1000	1200
	Min	20	35	40	58	78	130	130	130	130
Inner Clamping	Max	250	315	400	500	630	800	900	1000	1200
	Min	68	84	106	152	232	320	340	340	340
RPM Max.		2400	1900	1500	1200	1000	500	445	400	335
Approx weight (KG)		33	55	90	138	241	425	600	840	1150

Each chuck is supplied with – one set of reversible hard jaws, one number box spanner with tommy bar, one number allen wrench for jaw screws and one set of chuck clamping screws

* = Special sizes
Note : Minimum 2/3 engagement between screw and base jaw to be maintained during clamping.