What to Look for When Buying a Used Yuasa
Yuasa rotary tables and indexers are built for long service life, but used units should be carefully inspected before purchase. These devices serve as precision positioning equipment, so even small amounts of wear can affect part accuracy. Here is what to evaluate.
Check the worm gear and worm wheel for backlash. Mount a dial indicator on the table surface and apply rotational pressure in both directions to measure backlash. On a well-maintained Yuasa unit, backlash should be minimal (typically under 10 arc-seconds on CNC models). Excessive play indicates worn gearing that may require a rebuild. Confirm the worm gear adjustment has not been overtightened to mask wear.
Verify table runout and concentricity. Place a test indicator on the table bore and rotate through 360 degrees. Runout should be within the manufacturer's published specification for the model. Check the table surface for flatness using a precision straight edge. Scoring or uneven wear on the table face suggest heavy use or improper clamping practices.
Test the clamping system. Yuasa rotary tables use hydraulic or pneumatic clamping to lock the table during cutting. Cycle the clamp on and off repeatedly, confirming full engagement and clean release. Listen for air leaks on pneumatic models. On hydraulic units, check fluid levels and inspect lines for weeping. A weak clamp will allow the table to shift under cutting loads.
Inspect the motor, drive, and controller on CNC models. Power the unit and jog the table through its full rotation. Listen for unusual noise from the servo motor or drive train. Confirm the controller communicates properly with the CNC (Fanuc M-code handshake is the most common interface). Verify that the home position repeats accurately after multiple index cycles.
Yuasa CNC Rotary Tables
SUDX Series (Super-Precision CNC Rotary Tables)
The SUDX series is Yuasa's top-tier CNC rotary table line, designed for high-accuracy 4th-axis contouring and indexing. Models include the SUDX-220 (8.6-inch table) and larger variants. SUDX tables feature high-reduction worm gearing, preloaded cross-roller bearings, and hydraulic clamping. Positioning accuracy reaches 10 arc-seconds or better, making the SUDX a preferred choice for aerospace and medical applications.
UDX Series (Universal CNC Rotary Tables)
The UDX series is the most widely installed Yuasa CNC rotary table in North American shops. Models range from the UDX-5CA (5-inch) through mid-size 8-inch and 10-inch units to heavy-duty platforms. UDX tables combine CNC indexing with continuous contouring, accepting standard Fanuc rotary-axis commands. The robust worm-drive design handles both finishing and roughing operations. UDX tables hold their value well on the used market due to broad compatibility.
Tilting Rotary Tables (4th/5th Axis)
Yuasa tilting rotary tables add a second axis of rotation, converting a 3-axis VMC into a 5-axis machining platform. These units combine a CNC rotary table (A-axis) with a powered tilting trunnion (B-axis), enabling complex compound-angle work in a single setup. Available in several sizes, Yuasa tilting tables are widely used in aerospace prototyping and short-run production.
Yuasa Indexers
DMNC Series (CNC Indexers)
The DMNC series (DMNC-130, DMNC-170, DMNC-220) delivers high-speed CNC indexing for production applications. These units provide rapid angular positioning with pneumatic or hydraulic clamping and accept standard M-code commands from the CNC. DMNC indexers are compact enough to fit inside most VMC work envelopes while offering the torque needed for interrupted cutting.
DMB Series & Manual Indexers
The DMB indexing spacer line provides precise angular positioning for toolroom and short-run work using a direct-index plate system for fast, repeatable positioning at standard increments. Manual rotary tables with handwheel graduation round out the lineup for non-CNC applications. Both DMB and manual units remain popular on the used market.
Yuasa Workholding Accessories
Beyond rotary tables and indexers, Yuasa manufactures precision tool vises, angle plates, V-blocks, and fixture components. Used Yuasa vises and accessories offer strong value for shops expanding their workholding toolkit.
How to Sell Your Used Yuasa
Yuasa rotary tables and indexers hold solid resale value thanks to the brand's reputation for precision. The SUDX, UDX, and DMNC series are in consistent demand from shops adding 4th-axis capability.
Resell CNC buys used Yuasa equipment: every model, every condition, nationwide.
- Contact us — call (844) 478-8181 or email sales@resellcnc.com.
- Free appraisal within 24 hours, no obligation.
- Accept the offer — we handle rigging, transport, and logistics.
Frequently Asked Questions About Used Yuasa Equipment
Are used Yuasa rotary tables reliable?
Yes. Yuasa rotary tables are built with hardened worm gears, preloaded bearings, and heavy cast-iron housings designed for decades of service. A properly maintained used unit delivers accuracy comparable to new. Inspect backlash, runout, and clamping function before purchase.
What CNC control interface does Yuasa use?
Yuasa CNC rotary tables use a Fanuc-compatible interface as the standard communication protocol. Most units accept M-code indexing commands and rotary-axis (A or B) contouring commands directly from the machine tool's CNC control. Yuasa also offers its own UNDC controller for standalone operation. Compatibility with Fanuc, Haas, Mazak, and other CNC platforms is straightforward.
What should I inspect before buying a used Yuasa rotary table?
Focus on four areas: worm-gear backlash (measure with a dial indicator), table runout and flatness, clamping system function, and motor/controller operation on CNC models. Also check the table bore for damage and confirm mounting hardware is included.
What Yuasa models hold their value best?
The UDX CNC rotary table series holds the strongest resale value due to broad popularity and compatibility. SUDX super-precision tables retain value well in aerospace markets. DMNC CNC indexers are consistently in demand. Call (844) 478-8181 for current valuations on any Yuasa model.
Can I add a Yuasa rotary table to my existing CNC machining center?
Yes. Yuasa rotary tables are designed as aftermarket 4th-axis (and 5th-axis, for tilting models) additions to vertical and horizontal machining centers. Installation involves bolting the unit to the machine table, connecting the servo cable, and configuring control parameters. Yuasa provides wiring diagrams for major CNC platforms.
How do I sell my used Yuasa rotary table or indexer?
Contact Resell CNC at (844) 478-8181 or sales@resellcnc.com. We buy every Yuasa model: CNC rotary tables, indexers, manual tables, vises, and accessories, nationwide. Free appraisal within 24 hours.