
The F031 High-Speed Automatic Spindle For AG03 & AG05 Alloy Grinders (also fits Demco, Whip Mix, CF Price as replacement/upgrade) is a genuine RAY FOSTER product, supplied Unit. Stocked and shipped by US Dental Depot from our own facility in Boca Raton, FL.
Model F031 — High-Speed Automatic Spindle For AG03 / AG05 OEM FOSTER spindle — direct fit For current-production AG03 & AG05, plus replacement upgrade For Demco, Whip Mix, CF Price RAY FOSTER Dental Equipment has manufactured precision dental laboratory products in Southern California since 1938 .
The FOSTER precision High-Speed Automatic Spindle is the original mechanism — designed For heavy-duty continuous operation, quiet and smooth running, with a clutch handle that disengages the tool, stops rotation, and opens the collet in one motion. Change tools in seconds without stopping the motor. The F031 is the current-production FOSTER Automatic spindle For the AG03 and AG05 alloy grinders.
Key Features Designed For heavy-duty continuous operation Quiet and smooth-running precision-machined spindle Quick-change clutch mechanism — tool change in seconds, motor running Single-handle action: disengages clutch, stops rotation, opens collet Easy disassembly For on-site self-repair High-speed operation Direct fit: RAY FOSTER AG03 and AG05 Replacement/upgrade fit: Demco, Whip Mix, CF Price grinders Manufactured in the United States since 1938 Key Selling Points The original FOSTER Automatic spindle — the design every other grinder brand copies Same-day tool changes save minutes per case across daily caseload Field-serviceable — technicians can disassemble and replace internal parts Duty Rating Heavy-duty continuous operation Direct Fit RAY FOSTER AG03, AG05 Replacement/Upgrade Fit Demco, Whip Mix, CF Price grinders Compatible Collets RAY FOSTER F106 collet set Country of Manufacture United States of America What's in the Box 1 × RAY FOSTER F031 High-Speed Automatic Spindle Manufacturer instructions Manufacturer Warranty All RAY FOSTER products carry the manufacturer's warranty against defects in materials and workmanship.
| Model | High-Speed Automatic Spindle |
| Sub-model | FOSTER F031 (current AG03/AG05) |
| Style | OEM RAY FOSTER (Made in USA since 1938) |
| Colour | Polished Steel |
| Feature | Fits RAY FOSTER AG03 & AG05 (als |
| Detail | Compatible with FOSTER F106 collet set |
| Pack | Unit |
| Category | Grinder Polishers units · Automatic spindles · OEM RAY FOSTER |
| USDD SKU | 101704 |
| Brand | RAY FOSTER |
| Option | Tier | Positioning | Availability |
|---|---|---|---|
| RAY FOSTER (this listing) | Branded | Manufacturer-specified product | Stocked at USDD |
| USDD House Brand / value lines | Value tier | Lower cost per unit | Stocked at USDD — ask For the equivalent |
| Other branded alternatives | Premium tier | Comparable products from other makers | Ask us and we will quote the equivalent |
Replacement parts are model-specific — send us your model number and we will confirm the correct part before you order. Tier and positioning only — no performance figures are claimed For any brand. Tell us what you use now and we will match it honestly.
Tell us what you currently use and we will confirm the match before anything ships. Call 954-874-6325 or email support@usdentaldepot.com.
Technical data sheets and instructions For use are available from us on request — call 954-874-6325 or email support@usdentaldepot.com.
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