Drilling & Via Formation
Two-Head CNC Drilling Machine (2-Axis)
Engineer-configured drilling & via formation equipment for consistent results across rigid, multilayer, and HDI boards.
View detailsThe PCB Air Bearing Spindle Shaft 1331-21 is a replacement part for PCB drilling and routing machines. It belongs to our Bearings range and is supplied new, tested and ready to install, so you can restore the machine to its original accuracy without waiting for an OEM back-order.
What the PCB Air Bearing Spindle Shaft 1331-21 Does
Air-bearing components (front, rear and thrust bearings) float the high-speed spindle shaft on a thin air film. Their clearance defines stiffness, run-out and maximum RPM of the spindle.
Product Details
PCB spindle 1331-21 spare parts could be offered such as the spindle shaft, stator, bearings, collet etc.
Ordering & Delivery
- Trade Term: FOB Shenzhen USD by T/T in advance.
- Discount is allowed against your quantity.
- OED/OEM is accepted.
- Delivery will be carried out by Express or your requirement.
- Lead Time: 2~7 days after payment.
Frequently Asked Questions
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: If machines, it will be about 10~15 working days. If spares, it will be about 2~3 working days after payment.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
When to Replace It
- Spindle runs hot or stalls at high RPM
- Increased run-out or noise
- Shaft contact marks after a crash
- Air consumption higher than normal
How to Confirm Compatibility
Before ordering, please check or send us:
- Spindle series and rated RPM
- Bearing position (front / rear / thrust)
- Shaft diameter and clearance class
- Clean, dry compressed-air supply after installation
Looking for complete machines? See our Drilling & Via Formation and Profiling & Routing.
Technical Questions
Do you supply other spare parts for the same machine?
Yes. We supply collets, spindles and shafts, air bearings, pressure feet and brushes, cylinders, sensors, tool magazines, drill and router bits, and backup and entry boards for PCB drilling and routing machines.
Which machines is the PCB Air Bearing Spindle Shaft 1331-21 compatible with?
It is designed for PCB drilling and routing machines. Send us the machine model and the original part number (this item: Spindle Shaft 1331-21) and we will confirm the fit before shipment.
How fast can the PCB Air Bearing Spindle Shaft 1331-21 be delivered?
Spare parts in stock usually ship within 2–7 days after payment from Shenzhen, China, by international express (DHL, FedEx, UPS or your own forwarder).
What information do you need to quote the PCB Air Bearing Spindle Shaft 1331-21?
Please provide: spindle series and rated rpm, bearing position (front / rear / thrust), shaft diameter and clearance class, clean, dry compressed-air supply after installation. Photos of the installed part also help.
Sources & References
- IPC-A-600: Acceptability of Printed Boards
- IPC-6012: Qualification and Performance Specification for Rigid Printed Boards
- Photo Chemical Machining Institute — process capability guidelines
- NIST Engineering Statistics Handbook — process tolerance and capability
Standards are referenced for context. Always confirm parameters against the current published edition and your own process validation.
