How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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ATS Workholding SC300A-ST5 Scroll Collet Chuck Assembly 1-3/4 in Collet Capacity 3J

$799.99 USD

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✓ 30-day returns on every item — return policy

ConditionSurplus - Untested MPNSC300A-ST5 Stock #0226-00685

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

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⚡ Same-day shipping available — order by 11 am CT ($100 add-on at checkout)

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Used in CNC turning centers and manual lathes requiring precise collet-based workholding, the ATS Workholding SC300A-ST5 is a 3J Scroll Collet Chuck Assembly manufactured by Advanced Tool Systems. The Scroll True Length design holds the collet in a fixed axial position during actuation, ensuring consistent linear accuracy across repeated chucking cycles. A 3/8 in. ratchet drives the scroll and pinion mechanism for effortless collet engagement. This assembly accepts standard 3J collets with a 7-degree closing taper angle and a maximum collet capacity of 1-3/4 in., as published by ATS for their 3J scroll chuck line. The chuck body is machined steel with a black oxide finish and features a large rear mounting flange with multiple bolt hole patterns for spindle attachment. Part number SC300A-ST5 is stamped on the body. The date code 06-28-07 is visible on the nameplate. ATS Workholding is a US manufacturer with a broad product line of collet chucks used on a wide variety of CNC lathe brands. The exact spindle mount configuration associated with the ST5 suffix is not confirmed from visible markings alone and should be verified against the machine spindle prior to installation.

Stock # 0226-685

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Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.

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ATS Workholding SC300A-ST5 Scroll Collet Chuck Assembly 1-3/4 in Collet Capacity 3J