a) Standard Duty Semi Steel Body(Made out of 20 Gr cast iron having hardness of 180 to 220bhn)
b) Heavy Duty ALL STEEL BODY.(Medium cabron cast/forged steel)
c) Double slotted chucks.
d) Face plate precision chucks etc..(From 80mm to 1800mm)

Material specification:-

     semi steel boy:20 Gr. cast iron having hardness of 180 to 220 bhn,

     All steel bdoy: Medium carbon forged/cast steel Hard Jaws: EN 353,Hardness 55 to 60 HRC gripping
      area.trreading portion will be induction annealed to avoied breakage or premacture wearing of
      connecting parts.
     Lead Screw, Gattoo : Medium carbon direct hardening steel suitbly toughened.

     Independent chucks are manufactured & tested to ISI 10612-1983.

All spare parts of the chucks are made to be interchangeable for easy replacement. The replacement are however, available in sets to prevent non-uniform grip in the chucks.

Selection of 4-Jaw Chucks : The size of the chuck-dependent on the capacity/size of the machine. The diameter of the chuck should be slightly less than twice the centre height of the machine.

Standard Duty Chucks :

Sl. No.	Chuck Size	ΦA	B	ΦC	ΦD H7	E	F PCD	G	H	J	K	N Sq	Weight Kgs
1	4"	102	50.8	25	38	10	62	M8	16.0	35	19.05	6	3.5
2	5"	127	50.8	30	50	10	78	M8	20.5	48	19.05	6	7.0
3	6"	152	50.8	40	63.5	10	82.5	M8	20.5	48	19.05	6	9.0
4	8"	203	74.0	50.8	109.53	5.5	89.0	M10	33.5	73	30.16	9	15.0
5	10"	254	76.0	6305	120.65	8.0	98.4	M10	33.5	73	30.16	9	19.0
6	12"	305	87.5	76.2	152.40	9.5	130.0	M12	45.0	98.5	36.0	12	34.0
7	14"	355	90.5	76.2	177.80	12.7	146.0	M12	45.0	98.5	36.0	12	46.0
8	16"	406	93.5	76.2	177.80	12.7	146.0	M16	52.0	120.5	37.7	12	58.5
9	18"	457	93.5	100.0	200.00	12.7	171.45	M16	52.0	120.5	37.7	12	70.0
10	20"	508	109.5	104.7	241.30	12.7	203.20	M20	64.0	144.5	42.79	12	95.0
11	22"	559	109.5	104.7	241.30	12.7	203.20	M20	64.0	144.5	42.79	12	110.0
12	24"	610	116.0	139.7	304.80	19.05	260.35	M20	64.0	144.5	42.79	12	142.0
13	26"	660	116.0	139.7	304.80	19.05	260.35	M20	64.0	144.5	42.79	12	160.0
14	30"	762	127.0	152.4	381.0	19.05	304.8	8M20	81.0	174.5	53.97	16	240.0
15	32"	812	127.0	152.4	381.0	19.05	304.8	8M20	81.0	174.5	53.97	16	290.0
16	36"	915	127.0	177.8	450.85	19.05	355.6	8M20	81.0	174.5	53.97	16	380.0

        The diameter of the Chuck should be grater than the diameter of the job to be held. Also, when a            job is held in a Chuck all the jaws should be inside the chuck body.
       The chucks require a backplate to suit the spindle of the machine. The diameter of the backplate          should be equal to the recess in the chuck body.