GY 4300 Self Centering Chucks

Double Guide Standard Jaws With D1 Plate Type

Upgrade your machining precision with Self-Centering Chucks, engineered for consistent quality and a longer service life. Designed as single-guide standard jaw chucks, these high-performance components are built to handle rigorous industrial applications with ease.

Key Features

Construction & Material Specifications
Our self-centering lathe chucks are engineered for high-precision performance and long-term industrial use.Equipped with D1 Type Plates (Camlock) for quick-change efficiency.
    • Premium Chuck Bodies: Available in three configurations to match your RPM and durability requirements:
      • High-Tensile Cast Iron: Alloyed with Chromium, Nickel, and Manganese for superior wear resistance (Hardness: 210 BHN).
      • SG Iron (500/7 Grade): Designed for high-speed operations and extended service life (Hardness: 210 BHN).
      • Nickel-Chrome Alloy Steel: Features hardened and ground jaw ways for maximum accuracy and high-RPM stability (Hardness: 45 HRC).
    • Generous Through-Hole: Designed with large bore diameters to accommodate bar stock and long workpieces easily.
    • Precision Scroll: Drop-forged from high-tensile alloy steel, precision machined, and hardened to 35 HRC for consistent centering accuracy.
    • Hardened Jaws: Constructed from low-carbon alloy steel, case-hardened to 62 HRC, and ground on both sides to ensure a smooth fit and perfect pitch.
    • Durable Pinions: Made from specialized alloy steel and case-hardened to 50 HRC for high torque resistance.
    • Included Accessories: Every chuck includes a high-strength operating key and a full set of mounting bolts (3, 4, or 6 pieces).
    • Precision Jaw Systems: Available in both 3-jaw and 4-jaw configurations to provide superior grip and centering accuracy.
    • Extensive Size Range: We offer a comprehensive selection of sizes, from compact 80mm (5″) units up to heavy-duty 400mm (15.3/4″) chucks.

Accessories Included

Every Chuck comes ready for immediate setup with a comprehensive set of standard accessories:
  • 1 Set of Outside Hard Solid Jaws
  • 1 Set of Inside Hard Solid Jaws
  • 1 Pc. Chuck Operating Key
  • 1 Set of Mounting Bolts
Looking for more flexibility? Optional accessories including Soft Solid Jaws. are also available to customize your setup.

Applications

Self Centring Lathe Chucks are geared scroll chucks for use on lathes, rotary tables, dividing heads, milling machines etc.
GY 4300 Model Numbers
Chuck Size (MM) Chuck Size (Inches) Short Taper Through Hole C.I. Body S.G. Body Steel Body
3 Jaw 4 Jaw 3 Jaw 4 Jaw 3 Jaw 4 Jaw
125 5″ D1-4 32 12331254 12341254 22331254 22341254 32331254 32341254
160 6 1/4″ D1-4 42 12331604 12341604 22331604 22341604 32331604 32341604
160 6 1/4″ D1-5 42 12331605 12341605 22331605 22341605 32331605 32341605
200 8″ D1-4 55 12332004 12342004 22332004 22342004 32332004 32342004
200 8″ D1-5 55 12332005 12342005 22332005 22342005 32332005 32342005
200 8″ D1-6 55 12332006 12342006 22332006 22342006 32332006 32342006
250 10″ D1-6 76 12332506 12342506 22332506 22342506 32332506 32342506
250 10″ D1-8 76 12332508 12342508 22332508 22342508 32332508 32342508
315 12 1/2″ D1-6 105 12333156 12343156 22333156 22343156 32333156 32343156
315 12 1/2″ D1-8 105 12333158 12343158 22333158 22343158 32333158 32343158
400 15 3/4″ D1-8 136 12334008 12344008 22334008 22344008 32334008 32344008
400 15 3/4″ D1-11 136 123340011 123440011 223340011 223440011 323340011 323440011
Technical Specification
Size 125mm 160mm 200mm
Taper Nose D1-4 D1-4 D1-5 D1-4 D1-5 D1-6
A 125 160 160 200 200 200
B 63.513 63.513 82.563 63.513 82.563 106.375
C 32 42 42 55 55 55
D 66 75 75 83 83 83
E 20 30 30 29 29 29
F 21 22 25 22 25 28
G 51 70 70 85 85 85
H 13 13 15 13 15 16
J M 8 M 10 M 10 M 10 M 10 M 10
P.C.D K 108 140 140 176 176 176
Tol. on K ±0.25 ±0.30 ±0.30 ±0.30 ±0.30 ±0.30
L 5 5 8 5 8 12
M 117 117 146 117 146 181
P M10x1.0 M10x1.0 M12x1.0 M10x1.0 M12x1.0 M16x1.5
R 15.9 15.9 19 15.9 19 22.2
Size of Sq. Key 9 11 11 11 11 11
Technical Specification
Size 250mm 315mm 400mm
Taper Nose D1-6 D1-8 D1-6 D1-8 D1-8 D1-11
A 250 250 315 315 400 400
B 106.375 139.719 106.375 139.719 139.719 196.869
C 76 76 105 105 136 136
D 96 96 110 110 120 120
E 34 34 43 43 55 55
F 31 31 35 35 35 37
G 105 105 125 125 145 145
H 16 18 16 18 18 20
J M 12 M 12 M 16 M 16 M 16 M 16
P.C.D K 224 224 286 286 362 362
Tol. on K ±0.35 ±0.35 ±0.40 ±0.40 ±0.40 ±0.40
L 12 12 12 12 12 12
M 181 225 181 225 225 298
P M16x1.5 M20x1.5 M16x1.5 M20x1.5 M20x1.5 M22x1.5
R 22.2 25.4 22.2 25.4 25.4 30.2
Size of Sq. Key 14 14 14 14 17 17