What to Look for When Buying a Used Summit
Summit machines are built heavy and simple, which is exactly why so many stay in service for decades. That same durability means a well-maintained used Summit can deliver years of productive turning or milling. Here is what to inspect before you buy.
On lathes, check the bed ways, spindle, and gearbox. Sight down the hardened bed ways for wear or scoring near the headstock, where most cutting happens. Measure spindle runout with an indicator and listen for bearing noise across the speed range. Test the quick-change gearbox through several inch and metric thread settings, and engage the single-lever joystick feed in both directions to confirm smooth clutch and brake action. Inspect the large spindle bore for damage if the machine ran bar work.
Verify the carriage, cross slide, and tailstock. Check backlash in the cross slide and compound, run the carriage the full length of the bed, and confirm the apron feeds and threading half-nuts engage cleanly. On gap-bed models, make sure the removable gap section is present and seats correctly. Test tailstock quill travel and alignment.
On SmartCut CNC and EVS machines, test the Fagor control and axes. Power up the Fagor control and confirm the screen, keypad, and hand wheels all respond. Run each axis under power to feel for backlash or stick-slip, and verify the variable-speed spindle ramps smoothly. On CNC lathes, cycle the toolpost or turret; on EVS mills, test the power drawbar and conversational programming mode.
Summit Machine Series
Engine & Gap-Bed Lathes
The core of the Summit line. Sizes run from the 16″ L Series light-to-heavy-duty lathe through the 18″ and 20″ engine lathes up to the 22″ Precision, 24″, 28″, and 30″ Big Bore models. Used examples often carry numeric designations such as 16-3 x 60, 18-3 x 80, 20-4 x 80, and 26-4 x 60, where the figures describe swing, spindle bore, and distance between centers. All feature quick-change gearboxes, hardened ways, and large spindle bores.
Tool Room Lathes
Summit 20″, 24″, and 28″ tool room lathes add precision spindles and finer feed and thread selection for close-tolerance work, while keeping the same rugged castings as the production engine lathes. They are a common find for shops needing accuracy without a full CNC investment.
SmartCut II Series CNC Lathes
The SmartCut II Series CNC combination lathes (SC20, SC24, SC28, SC30, and SC32 frame sizes, including Big Hole variants) blend full CNC capability with manual hand wheels. Running a Fagor 8055 control, they include a self-teaching feature that records manually produced parts for later reproduction, making them well suited to one-off, small-lot, and medium production runs in shops transitioning from manual turning.
SmartCut EVS Series CNC Vertical Mills
The SmartCut EVS Series (SC EVS-350B, SC EVS-550B, and SC EVS-760-B) are CNC vertical mills aimed at shops moving from manual milling to CNC. They use the Fagor 8055 / 8058 dual-mode control offering both ISO G-code programming and icon-based conversational programming, with an electronic variable-speed spindle, 3D solid graphics, and an air-operated power drawbar.
Mills, Drills & Boring Mills
Beyond CNC, Summit builds manual knee mills, vertical bed mills, radial and upright drill presses, and horizontal and vertical boring mills, including horizontal boring models with rotary tables for large fabricated work. These conventional machines are valued for their rigidity and simple maintenance, remain popular in maintenance and repair shops, and appear regularly on the used market at attractive value.
How to Sell Your Used Summit
Summit machines hold their value thanks to heavy construction, broad parts availability, and steady demand from job shops and maintenance departments. Engine lathes, gap-bed lathes, and the SmartCut CNC machines are especially sought after.
Resell CNC buys used Summit machines — every model, every generation, nationwide.
- Contact us — call (844) 478-8181 or email sales@resellcnc.com.
- Free appraisal within 24 hours, no obligation.
- Accept the offer and we handle rigging, transport, and logistics.
Frequently Asked Questions About Used Summit Machines
Are used Summit machines reliable?
Yes. Summit built its reputation on heavy, simple, durable machines often described as "the most machine for the money." Their lathes use thick castings, hardened ways, and straightforward mechanical systems that are easy to maintain, which is why many machines from the 1970s and 1980s are still in daily production.
What CNC control do Summit machines use?
Summit's SmartCut CNC lathes and SmartCut EVS vertical mills run Fagor controls, commonly the Fagor 8055, 8055i MC, or 8058. These offer both ISO G-code programming and conversational, icon-based programming, plus hand wheels on the combination lathes for manual operation.
What should I inspect before buying a used Summit lathe?
Check the bed ways for wear near the headstock, measure spindle runout, and test the quick-change gearbox and single-lever feed control. Verify cross slide and compound backlash, run the carriage the full bed length, and confirm tailstock alignment. On gap-bed models, make sure the removable gap section is included.
What Summit models hold their value best?
The 18″ and 20″ engine lathes, the larger 24″ through 30″ Big Bore lathes, and the SmartCut II CNC combination lathes tend to hold value well because of steady shop demand and parts support. Call (844) 478-8181 for current valuations.
Where are Summit machines made?
Summit Machine Tool is headquartered in Oklahoma City, Oklahoma, and has served the industry since the early 1950s. Its lathes are American-designed and manufactured in Europe to ISO standards, then sold and supported through Summit's Oklahoma operation.
What is the difference between a SmartCut CNC lathe and a manual Summit lathe?
A manual Summit engine or gap-bed lathe is operated entirely by hand wheels and levers. A SmartCut II CNC lathe adds a Fagor CNC control with hand wheels retained, so it runs in manual, semi-automatic, or fully automatic mode and can store and repeat machining sequences. It bridges manual turning and full CNC production.
Does Resell CNC offer financing on used Summit machines?
Yes. Resell CNC offers flexible financing options to help your business acquire the equipment it needs. Contact us at (844) 478-8181 to discuss terms.
How do I sell my used Summit?
Contact Resell CNC at (844) 478-8181 or sales@resellcnc.com. We buy every Summit lathe, mill, drill, and boring machine, nationwide. Free appraisal within 24 hours.