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Sioux Valve Grinder Model# 685 L Great shape 🔥 - $3,200 (La Crescenta)
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Great shape, little use owned by a Bonaville Racer, selling off estate like new $3200
The Sioux Valve Grinder Model 685L is an automatic valve face grinding machine featuring high-precision collet clamping and variable speed controls.
Key Specifications
• Chuck Accuracy: High-precision collet system up to .0003" T.I.R. (Total Indicated Runout). [1]
• Collet Capacity: Ranges from 3 mm to 17 mm (.118 to .670 inches). [1]
• Chuck Speed: Variable speed chuck from 150 to 300 RPM. [1]
• Valve Angles: Accommodates valve face angles from 0° to 46°. [1]
• Chuck Operation: Fast load and unload air chuck with push-button collet release, lock-open feature, and adjustable air pressure. [1]
• Grinding Head & Feed: Adjustable grinding head with micrometer feed. [1]
• Positioning: Adjustable internal stop for quick and repeatable valve positioning. [1]
• Grinding Wheel: Sioux No. 173 grinding wheel designed for a fine finish. [1]
• Table Slide: Precision linear ball bearing chuck table slide. [1]