Core Mandrel 

Core mandrels provide enhanced frictional control and improves release characteristics, delivering a lower release force during catheter manufacturing. Designed as manufacturing aid for coil and braided catheter shafts or tubing, our mandrels specialize in supporting tight tolerances and repeatable processing.

Material Options:

• Premium plain acetal
• Premium acetal blend with silicone surface
• Acetal or silicone acetal with stainless-steel wire reinforcing
• PEEK

Specifications

• Sizes range from 0.010"–0.250" (0.254 mm–6.35 mm)
• Finished mandrel tolerances: from 0.0005” (0.0127 mm) on small OD mandrel to 0.003” (0.0762 mm) on large OD 
• Dedicated to highly consistent diameter, roundness, and ulta-smooth surface for easy removal
• PPK values >2.0
• Optional level wind on mandrels >0.070" (1.778 mm):
• maximizes spool capacity and supports consistent flow when unwinding the core during the braiding process
• Higher yields which reduces scrap and cost
• Samples available

Speed up development of your braid- or coil-reinforced catheter tubing with our quick-turn Core Mandrel program. We provide precision-machined acetal or silicone-blend mandrels, ready for immediate use in extruded tubing and solid rod setups — built and shipped within five calendar days (expedited fee applies).*

Program Details:

• Size: .015" (0.381 mm) to .220" (5.588 mm)
• For core sizes 0.070” and larger: level winding available on request
• Materials: Acetal or acetal with silicone blend
• Quantity: 1-3 Spools (custom sizes available)

*Larger commercial runs may also qualify for the same 5-day build period, depending on order quantity and OD size.