About Coromant Capto

Used Coromant Capto Tooling for Sale

Resell CNC is your Simple. Reliable. and Trusted.® source for used Coromant Capto modular tooling — including quick-change clamping units, static and driven tool holders, modular adapters and extensions, cutting heads, machine adapted clamping units (MACU), double clamping units, and complete Capto tooling packages. We carry Coromant Capto products in all six standard sizes: C3, C4, C5, C6, C8, and C10.

Coromant Capto was invented by Ken Andersson at Sandvik Coromant, with the first prototype completed in 1989 and the full system unveiled at IMTS 1990 in Chicago. The system introduced a unique three-sided polygon taper coupling that delivers automatic radial centering, even contact pressure, and repeatability within 2 microns. Sandvik Coromant is headquartered in Sandviken, Sweden, with North American operations based in Mebane, North Carolina. Following the expiration of the original patent, Coromant Capto was adopted as ISO standard 26623 in 2008, ensuring that any manufacturer producing the coupling must conform to identical tolerances and specifications. This ISO certification opened the interface to production by multiple tooling manufacturers worldwide while preserving full compatibility. Coromant Capto is considered the only true universal modular system covering turning, milling, drilling, boring, and grooving operations across turning centers, machining centers, multi-task machines, and vertical lathes. The system is directly integrated into spindles and turrets by major machine tool builders as a factory option.

Looking to sell your Coromant Capto tooling? Resell CNC buys used Coromant Capto equipment nationwide, covering any size, any product type, and any quantity. Free appraisal within 24 hours, competitive offers, and we handle all logistics. Call (844) 478-8181 or email sales@resellcnc.com.

Sell My Coromant Capto

Don't see the Coromant Capto tooling you're looking for?
New inventory arrives daily. Create a free alert and we'll notify you the moment matching Coromant Capto tooling hits our inventory. Or call (844) 478-8181 — our team sources specific Capto products on request.

Coromant Capto Quick-Change Clamping Units

Coromant Capto clamping units mount directly to CNC lathe turrets and provide the quick-change interface that accepts all Capto cutting heads, adapters, and tool holders. Machine adapted clamping units (MACU) are available for most major lathe builders' turret designs. Camshaft-activated drawbar clamping requires only a quarter turn to lock or unlock, reducing tool change time to as little as 30 seconds compared to 5 to 20 minutes with conventional tooling. Double clamping units allow two tools per turret station for Y-axis, half-turret, and sub-spindle applications.

Coromant Capto Modular Adapters & Extensions

The modular adapter catalog includes extension adapters, reduction adapters (coupling larger Capto sizes to smaller), and straight-shank adapters for bridging between Capto and conventional interfaces such as SK, HSK, and Big Plus. This modularity means the same cutting tools can be used across different machines in the shop regardless of spindle interface, reducing tool inventory and eliminating expensive special tools with long lead times.

Coromant Capto Cutting Heads & Tool Holders

Coromant Capto accepts the full range of Sandvik Coromant cutting heads including CoroTurn (turning and boring), CoroDrill (drilling), CoroMill (milling), and CoroThread (threading) families. Static holders for turning, grooving, parting, and boring mount directly into clamping units. Driven holders enable milling, drilling, and tapping on live-tooling lathe turrets. All cutting heads feature through-coolant delivery as standard.


Introduced	1990 (prototype 1989), by Sandvik Coromant
Manufacturer	Sandvik Coromant (Sandviken, Sweden; US: Mebane, NC)
ISO Standard	ISO 26623 (certified 2008, open to all manufacturers)
Best Known For	Modular quick-change tooling, polygon taper coupling, universal machining interface
Sizes	C3 (32 mm), C4 (40 mm), C5 (50 mm), C6 (63 mm), C8 (80 mm), C10 (100 mm)
Core Technology	Three-sided polygon taper (1:20), ±2 micron repeatability, camshaft drawbar clamping
Industries Served	Aerospace, automotive, medical, energy, mold & die, general manufacturing

What to Look for When Buying Used Coromant Capto Tooling

Coromant Capto is a precision-engineered tooling system built to ISO 26623 specifications with a three-sided polygon taper that delivers repeatability within 2 microns. Here is what to evaluate on used units.

Inspect the polygon taper coupling. The polygon taper is the critical interface surface. Check for fretting, scoring, nicks, or burring on the three-lobed taper surface. Even minor damage disrupts the self-centering function and degrades repeatability. On clamping units, check the internal taper bore for wear or contamination.

Test clamping force and mechanism. Coromant Capto uses camshaft-activated drawbar clamping with segment locking. Verify that the quarter-turn clamping mechanism locks and unlocks cleanly with positive engagement. On gas-spring drawbar units, verify rated clamping force is maintained.

Verify size compatibility and condition. Confirm that all tooling matches your machine's Capto size (C3 through C10). Check flange contact surfaces for flatness since full flange contact is essential for Z-axis repeatability.

Check coolant-through passages. Coromant Capto delivers coolant through the coupling to the cutting edge as standard. Verify that internal coolant passages are clear and unobstructed on both clamping units and cutting heads. Blocked passages reduce tool life and cutting performance.

Coromant Capto Clamping Units & MACU

Machine adapted clamping units (MACU) are the foundation of a Capto installation on CNC lathes. These units mount directly to the turret in the machine builder's native interface and accept all Capto cutting heads and adapters. MACUs are available as standard products for most major lathe brands. Double clamping units mount two Capto receivers in a single turret station, effectively doubling the number of available tools for Y-axis and sub-spindle work. ATC-MACU systems enable automatic tool changing on turning centers with disc magazine storage for unattended production.

Coromant Capto Sizes & Specifications

The C3 (32 mm flange) serves small lathes and compact turning centers. C4 (40 mm) is the most common size for mid-range turning centers and driven tool applications. C5 (50 mm) and C6 (63 mm) cover larger turning centers and multi-task machines. C8 (80 mm) handles heavy-duty turning and boring with the highest clamping force (45,000 N with gas-spring drawbar). C10 (100 mm flange with larger polygon) serves the largest vertical lathes and heavy machining applications.

Coromant Capto for Machining Centers

On machining centers, Coromant Capto functions as a modular system with extension and reduction adapters that enable assembling tools of different lengths and configurations regardless of the machine's spindle interface (SK, HSK, or Big Plus). The polygon coupling transmits torque without drive keys, providing superior torque and bending stiffness compared to circular interfaces.

Coromant Capto Cutting Heads

The Sandvik Coromant cutting head catalog for Capto includes CoroTurn turning and boring heads, CoroDrill drilling heads, CoroMill milling cutters, CoroThread threading tools, and CoroBore precision boring heads. All cutting heads feature the polygon coupling and through-coolant delivery. Pre-setting outside the machine eliminates measuring cuts at the start of each batch, reducing scrap and startup time. The same cutting heads work across every Capto-equipped machine in the shop.

How to Sell Your Used Coromant Capto

Coromant Capto tooling holds strong resale value thanks to ISO 26623 standardization, universal compatibility, and consistent demand from shops running Capto-equipped turning centers, multi-task machines, and machining centers. MACU clamping units, C6 and C8 adapters, and complete Capto tooling packages are in particularly high demand.

Resell CNC buys used Coromant Capto tooling in any quantity, any size, nationwide.

Contact us — call (844) 478-8181 or email sales@resellcnc.com.
Free appraisal within 24 hours, no obligation.
Accept the offer — we handle packaging, shipping, and logistics.

Frequently Asked Questions About Used Coromant Capto Tooling

Is used Coromant Capto tooling reliable?

Yes. Coromant Capto is built to ISO 26623 specifications with a three-sided polygon taper delivering repeatability within 2 microns. The hardened coupling surfaces are designed for thousands of tool changes. Used Capto tooling with clean, undamaged polygon tapers continues to perform to original specifications.

What is the relationship between Coromant Capto and ISO 26623?

Sandvik Coromant invented Coromant Capto and held the original patent. After the patent expired, the company drove ISO 26623 certification to ensure that any manufacturer producing the coupling conforms to identical tolerances. This means used Capto tooling from any ISO-certified source is fully compatible.

What should I inspect before buying used Coromant Capto?

Check the polygon taper for fretting, scoring, or nicks. Test the clamping mechanism for positive quarter-turn engagement. Verify correct size (C3 through C10) for your machine. Check flange contact surfaces for flatness and inspect coolant passages for blockage.

Can Coromant Capto work on any CNC machine?

Coromant Capto is available for most major CNC lathe, machining center, and multi-task machine platforms through machine adapted clamping units (MACU) or spindle adapters. The system covers turning, milling, drilling, boring, and threading operations across all machine types.

What Coromant Capto sizes are most common?

C4 (40 mm) and C6 (63 mm) are the most widely used sizes. C4 serves mid-range turning centers and driven tool applications. C6 covers larger turning centers and multi-task machines. C8 (80 mm) handles heavy-duty applications on larger machines.

What Coromant Capto products hold their value best?

MACU clamping units hold the strongest values since they are machine-specific and costly to replace. C6 and C8 adapters and cutting heads also retain value well. Complete Capto tooling packages command premiums. Call (844) 478-8181 for current valuations.

Does Resell CNC offer financing on used Coromant Capto?

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 Coromant Capto tooling?

Contact Resell CNC at (844) 478-8181 or sales@resellcnc.com. We buy all Coromant Capto tooling nationwide in any quantity, from individual cutting heads through complete shop tooling packages. Free appraisal within 24 hours.