Send a part number, a photo, or a whole BOM — we supply it and stand behind it. EXW Singapore — collect from our office.

3G Electric
JACOBS Taper-Mount Keyed Drill Chuck - Taper-Mount Keyed Drill Chucks
JACOBSTaper-Mount Keyed Drill Chucks

JACOBS Taper-Mount Keyed Drill Chuck

The JACOBS Drill Chuck, model JCM6309, is a taper-mount keyed drill chuck with a JT3 taper and a capacity range of 3/16 in to 51/64 in, operated by a K4 key. This industrial tool is designed for secure bit retention…

SKU 3G-OTH-251546

Also listed as: JCM 6309 · JCM-6309

Brand
JACOBS
Item
Taper-Mount Keyed Drill Chuck
Part Number
JCM6309
Category
Taper-Mount Keyed Drill Chucks
Available to Order
Also known as:JCM6309JACOBS
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

JACOBS
Manufacturer Part Number
JCM6309
Series
36
Material
Steel
Key
Chuck Key Included
Keying
Keyed
UNSPSC
27112807
Features
Hardened Keyholes; Hardened Nose; Jaws Center-Grind for Straightness and Alignment; Through-Hardened Sleeve Teeth
Key Number
K4
Duty Rating
Heavy
Bearing Type
Plain
Catalog Page
N/A
Product Type
Drill Chuck
Mounting Size
JT3
Mounting Type
Internal Jacobs Taper
Overall Length
3-9/64 in
Includes Sleeve
Sleeve Included
T.I.R. Tolerance
0.004 in
Country of Origin
China (subject to change)
Compatible Tool Type
Bench Top-Mounted Power Tools; Floor-Mounted Power Tools
Jacobs Taper Drive Type
Standard Drive
Outside Diameter - Maximum
2.54 in
For Max Drill Bit Shank Size
51/64 in
For Min Drill Bit Shank Size
3/16 in
Drill Bit Shank Capacity (Fractional Inch)
3/16 in to 51/64 in
Drill Bit Shank Capacity (Decimal Equivalent)
0.1875 to 0.7969

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

JACOBS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The JACOBS Drill Chuck, model JCM6309, is a taper-mount keyed drill chuck with a JT3 taper and a capacity range of 3/16 in to 51/64 in, operated by a K4 key. This industrial tool is designed for secure bit retention in drilling applications.

Frequently Asked Questions

What is the JACOBS JCM6309 drill chuck used for?

The JACOBS JCM6309 is a taper-mount keyed drill chuck used for secure bit retention in industrial drilling applications. Its JT3 taper and 3/16 in to 51/64 in capacity make it suitable for precision work in machining, metalworking, and assembly operations where reliable grip is critical.

What are the specifications of the JACOBS JCM6309 drill chuck?

The JACOBS JCM6309 is a taper-mount keyed drill chuck with a JT3 taper, capacity range of 3/16 in to 51/64 in, and uses a K4 key for tightening. The manufacturer part number is JCM6309. It is designed for industrial drilling applications requiring secure bit retention.

Where to buy the JACOBS JCM6309 drill chuck worldwide?

3G Electric supplies the JACOBS JCM6309 drill chuck worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this taper-mount keyed chuck to your facility. Contact us for pricing and lead time on this JACOBS model.

How to install a JACOBS JCM6309 taper-mount drill chuck?

To install the JACOBS JCM6309, clean the JT3 taper on both the chuck and spindle, then firmly press the chuck onto the spindle using a drill press arbor or soft-faced hammer. Ensure the K4 key is used to tighten the jaws around the bit. Always follow the manufacturer's instructions for safe operation.

Used in

Common applications for JACOBS
Metalworking job shops — JACOBS MT3 to MT3 Morse taper extension (30450DN) for extending reach when drilling deep holes on a milling machine.
Automotive engine rebuilding — JACOBS MT2 to MT2 Morse taper extension (30446N) used in a drill press to adapt short tooling for cylinder head work.
Aerospace component manufacturing — JACOBS MT4 to MT5 Morse taper extension socket (30455DN) to adapt MT4 tooling to an MT5 spindle on a large machining center.
General maintenance and repair — JACOBS MT3 to MT2 Morse taper extension (30447DN) for adapting MT2 shank tools to an MT3 spindle in a maintenance workshop.
Tool rooms and die maintenance — JACOBS MT5 to MT4 Morse taper extension (30454N) to reduce from MT5 spindle to MT4 tooling for precision reaming operations.
Heavy equipment repair — JACOBS MT3 to MT4 Morse taper extension (30452N) used in a radial arm drill to adapt MT3 tools to an MT4 spindle for large hole drilling.
Not sure this is the right part? Photo-identify it→

JACOBS Products

3G Electric supplies JACOBS taper-mount keyed drill chucks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from JACOBS

View all JACOBS parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first