Holemaker
SADCA Drill Chuck Adapter 3/4″ Weldon to 1/2″-20 UNF — For Mag Drills
Part No: SADCA | Barcode: 9328042010087 | Product Group: Mag Drill Chucks
Holemaker SADCA drill chuck adapter converts a 3/4″ Weldon shank arbor to 1/2″-20 UNF thread, allowing standard drill chucks to be used in magnetic base drilling machines. Expands your mag drill’s versatility for twist drilling, tapping, and reaming.
3/4″ Weldon Input
1/2″-20 UNF Output
For Mag Drills
Accepts Drill Chucks
Key Features & Benefits
- 3/4″ Weldon to 1/2″-20 UNF Conversion — fits into any standard 3/4″ Weldon arbor and provides a 1/2″-20 UNF threaded output for drill chucks.
- Expands Mag Drill Versatility — turns your magnetic base drill into a twist drill, reamer, or tapping machine by accepting standard drill chucks and tooling.
- Solid Construction — precision-machined adapter ensures accurate alignment between the mag drill spindle and the drill chuck.
- Universal Compatibility — works with any 1/2″-20 UNF threaded drill chuck and any mag drill with a 3/4″ Weldon arbor.
When to Use This Adapter
Use the SADCA when you need to use standard twist drills, reamers, or taps in your magnetic base drilling machine. It converts the 3/4″ Weldon arbor to accept any 1/2″-20 UNF threaded drill chuck, giving you access to the full range of round-shank tooling. Particularly useful when you need hole sizes not covered by Weldon-shank twist drills (SPTSD series) or when you need to ream or tap a hole after drilling.
Pro Tip: Pair the SADCA with a quality keyless or keyed drill chuck for quick tool changes. When using twist drills through this adapter, keep RPM low and feed pressure moderate — mag drills generate high torque that can grab small twist drills if fed too aggressively.
Authorised Australian Dealer — This product is sourced directly from Holemaker Australia and is backed by full Australian manufacturer warranty and local support.
Product Specifications
| Part No. | Input (Shank) | Output (Thread) | Barcode |
|---|---|---|---|
| SADCA ★ | 3/4″ Weldon (19.05mm) | 1/2″-20 UNF | 9328042010087 |
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