TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key

TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key

$106.12 CAD
$106.12 CAD
TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key

TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key

$106.12 CAD
$106.12 CAD

Professional 125mm / 5-Inch 4-Jaw Self-Centering Lathe Chuck

The TOP-TOOL Professional 125mm (5-inch) chuck bridges the gap between hobby and light-industrial turning. HT300 Cast Iron construction with AISI 5140 alloy steel scroll handles medium-duty cuts with precision and stability.

Premium Materials & Hardening

Component Material Hardness (HRC)
Body HT300 Cast Iron —
Jaws AISI 1045 Carbon Steel 52-58
Scroll Plate AISI 5140 Alloy Steel 43-48
Bevel Gears AISI 5140 Alloy Steel 45-50
Back Plate HT100 / Engineered Plastic —

Key Features

  • HT300 Cast Iron Body: Superior rigidity and vibration damping for medium lathes. Reduces chatter during heavy facing and turning.
  • Hardened Scroll & Gears: AISI 5140 alloy steel scroll (HRC 43-48) and bevel gears (HRC 45-50) for smooth, precise operation.
  • Hardened Jaws (HRC 52-58): AISI 1045 carbon steel jaws through-hardened for maximum grip strength.
  • Guaranteed Precision: Every chuck tested with 4 different diameter test bars. Repeatability ≤0.05mm (0.002").
  • Plain Back Mount: 3× M8 mounting pattern. Important: Requires an adapter plate matched to your lathe spindle.
  • Includes External & Internal Jaws: Supplied with both external jaws (5–95mm) and internal jaws.
  • T-Key Included: Secure tightening. Remove before running.

Technical Specifications

Parameter Value
Chuck Diameter (D) 125mm
Clamping Range (External) 5 – 95mm
D2 108mm
D3 30mm
Body Length (H) 78mm
H1 55mm
Jaw Step Height (h) 3.5mm
Mounting Thread (z-d) 3× M8
Repeatability ≤0.05mm (0.002")
Net Weight 4.5 kg

Error-Free Jaw Installation

Numbered jaws (1, 2, 3) match the chuck body slots for quick, accurate installation. Prevents misalignment and ensures optimal concentricity.

Versatile Applications

  • Lathe: General turning, facing, drilling, boring
  • Milling Machine: Workpiece holding for milling
  • Drilling Machine: Precision drilling setups
  • CNC Machine: Light CNC turning and production

Compatibility Guide

Designed for medium benchtop lathes.
Sizing Rule: Lathe swing diameter > Chuck diameter (125mm). For safe operation with jaw overhang, a swing of ≥160mm is recommended.

Maintenance

Keep the scroll clean. Lubricate with Molybdenum Disulfide (MoS2) grease periodically. Store in a dry environment.

Styled With
TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL 160mm lathe chuck with T-key for easy adjustment
  • Components of TOP-TOOL Lathe Chuck: Body, Internal Jaws, External Jaws, T-Key
  • Professional 3-Jaw Lathe Chuck Mounted on a Metalworking Lathe
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL 160mm lathe chuck with T-key for easy adjustment
  • Components of TOP-TOOL Lathe Chuck: Body, Internal Jaws, External Jaws, T-Key
  • Professional 3-Jaw Lathe Chuck Mounted on a Metalworking Lathe
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
  • TOP-TOOL Professional 4-Jaw Self-Centering Lathe Chuck, 125mm/5-inch, Cast Iron Construction, 2-80mm Clamping Range with Internal External Jaws and T-Key
Materials

HT300 AISI1045 AISI 5140

Included Accessories

T-Key,Bolts ,External Jaws（One-piece Jaw Chuck）
Details

Backplate not included.

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