Jacobs Super Chuck Keyed Ball Bearing Drill Chuck 18N, 1/8 - 3/4" Range, JT4 Mount - 71-743-9

Brand:   Jacobs
SKU:
71-743-9
ID:
86458
UPC:
095456302334
Model 18N
Range 1/8 - 3/4"
Mount JT4
Key K4
$399.95
Current Stock:
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Jacobs Chuck

Jacobs Super Chuck Keyed Ball Bearing Drill Chuck 18N, 1/8 - 3/4" Range, JT4 Mount


JT4, 1/8 to 3/4" Capacity, Tapered Mount Drill Chuck
Keyed, 3-1/64" Sleeve Diam, 3-31/32" Open Length
Catalog Number: 30233

Features:

  • Specially engineered for heavy duty close tolerance production drilling.
  • Ideal for use on jig borers, milling machines, lathes and radial drill presses.
  • Ball bearing construction maximizes gripping force and drilling accuracy.
  • Jaws are centerground for absolute straightness and alignment.
  • All working components are hardened for maximum wear resistance
  • Tapered mount drill chucks have an internal Jacobs Taper (JT) that is press-fit onto a corresponding JT arbor (shank) or spindle.
  • Keyed chucks are engineered to either loosen or tighten the hold on a tool by using a key. Keyed chucks offer the advantage of applying additional torque on the bit when slippage is a concern during heavy-duty applications.
  • Ball bearings are designed to reduce friction in the tightening mechanism and provide a better grip on the drill. They are used for heavy-duty machining and require a key for tightening or loosening.
  • Ball Bearing Construction Maximizes Gripping Force and Drilling Accuracy.
  • Jaws Center-Ground for Straightness and Alignment.
  • One-Piece Sleeve Eliminates Crack Between Driving Teeth Often Found in Other Designs.
  • Through-Hardened Sleeve Teeth Plus Hardened Nose and Keyholes Provide Outstanding Wear Resistance.
  • Fluted Sleeve Standard.
  • Each Chuck 100% Inspected for Performance and Precision.
  • T.I.R. 0.003" Maximum at Half Capacity.

Specifications:

UPC 095456302334
Set No
Maximum Capacity 0.750 in
Minimum Capacity 0.125 in
Mount 4JT
Sleeve Outer Diameter 3.01 in
Model Number 18N

 

Manufacturer Part # 30233
18N
Maximum Drill Chuck Capacity (mm) 19.05
Maximum Drill Chuck Capacity (Inch) 3/4
Maximum Drill Chuck Capacity (Decimal Inch) 0.7500
Minimum Drill Chuck Capacity (mm) 3.18
Minimum Drill Chuck Capacity (Inch) 1/8
Minimum Drill Chuck Capacity (Decimal Inch) 0.1250
Mount Type Tapered Mount
Mounting Size JT4
Key Style Keyed
Bearing Type Ball Bearing
Material Steel
Closed Length (mm) 130.18
Closed Length (Inch) 5-1/8
Open Length (mm) 100.81
Open Length (Inch) 3-31/32
Sleeve Diameter (mm) 76.60
Sleeve Diameter (Inch) 3-1/64
Key Number K4
TIR (Decimal Inch) 0.0030



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Jacobs Super Chuck Keyed Ball Bearing Drill Chuck 18N, 1/8 - 3/4" Range, JT4 Mount - 71-743-9

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$399.95