Jacobs Super Chuck Keyed Ball Bearing Drill Chuck 18N, 1/8 - 3/4" Range, JT4 Mount - 71-743-9Brand: Jacobs
|Range||1/8 - 3/4"|
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
- 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.
|Maximum Capacity||0.750 in|
|Minimum Capacity||0.125 in|
|Sleeve Outer Diameter||3.01 in|
|Manufacturer Part #||30233 |
|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|
|Bearing Type||Ball Bearing|
|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|
|TIR (Decimal Inch)||0.0030|
Jacobs Super Chuck Keyed Ball Bearing Drill Chuck 18N, 1/8 - 3/4" Range, JT4 Mou…
Jacobs Super Chuck Keyed Ball Bearing Drill Chuck 18N, 1/8 -…