Keep Jobs Moving
A single failed part can stop a whole run. We help SMB machine shops find in-stock CNC spares, MRO supply, motion components, and power transmission parts by part number, confirm equivalents through cross-referencing, and ship fast.
- Reduce downtime on CNC machines and shop equipment
- Find discontinued or hard-to-identify parts with cross-references
- Confirm dimensions, specs, and compatible replacements
- Hit tight timelines with fast shipping options
Upstream, Midstream & Downstream
Upstream
Spindle & Drive Components
- Precision spindle bearings
- Ball & lead screws
- Servo motors
- Rotary encoders
- Angular contact bearings
- Linear blocks & rails
Midstream
Tooling & Workholding Systems
- Automatic tool changer (ATC) parts
- Collet chucks
- Hydraulic actuators
- Tool turret components
- Power supplies
Downstream
Control Units & Electronics
- CNC control boards
- Power supplies
- Cooling fans
- Limit switches
- Operator pendants
Common Replacement Parts
CNC & Motion Components
Linear guides, servo motor parts, stepper motor items, and related spares.
Controls & Electrical
Fanuc servo motor items, industrial power supply, amplifiers, and components.
Shop MRO & Mechanical
MRO essentials, mechanical parts, bearings, housings, couplings, and more.
Industries
Manufacturing & Industrial
Heavy Equipment, AG & Construction Machinery
Bearings and industrial parts for hard-working equipment in rough conditions, built to support reliable operation, quick repairs, and repeat service needs.
Machine Tools & CNC
Replacement bearings and parts that support spindle performance, tighter tolerances, and consistent results, with easy part-number search and fast shipping.
Oil, Gas, & Power Generation
Bearings and MRO parts for pumps, compressors, turbines, and rotating equipment, where uptime, lead time, and dependable replacements matter.
Robotics Automation & Motion Control
Automotive & Transportation
Featured Products
$33.97
1 in stock
$61.12
1 in stock
$84.99
1 in stock
$108.43
1 in stock
$40.59
3 in stock
$22.51
1 in stock
Frequently Asked Questions
How do I search for a part?
Use our search bar to search by part number, model number, or keyword. You can also search by item specs or attributes.
Can you cross-reference my part number?
Yes. We can cross-reference industrial parts by model numbers and attributes to identify alternates, substitutes, and equivalents.
Do you carry CNC-related items?
Inventory changes daily, and we stock shop spares such as linear guides, servo motor and stepper motor items, and related components.
Do you ship quickly?
Everything you order is in stock, and orders placed by 6 pm EST ship the same day. Expedited shipping options are available including next-day air, and we can use your carrier number.
What should I send to identify a part?
Part markings, photos, dimensions, and any other details or descriptions you can provide.
Can you source parts not listed online?
If you cannot find what you need, we will find it through our network at competitive prices.
Do you support bulk orders?
Send your list and quantities for pricing and shipping options.
Parts & Systems We Supply for Machine Tools & CNC
A machine tool is only as good as the spindle that turns and the control that commands it — and when either goes down, a whole cell stops making parts. Central Surplus supplies the new and surplus precision components that keep mills, lathes, machining centers, and grinders cutting: super-precision spindle bearings, CNC drives and controls, encoders, and workholding and tooling. As a surplus distributor we routinely stock obsolete and discontinued CNC boards, drives, and spindle bearings that OEMs have end-of-lifed, so you can rebuild an older machine instead of replacing it.
Categories we supply for machine tools & CNC include:
- Super-precision spindle bearings (angular-contact, matched sets) for mill and lathe spindles.
- Drives & Amplifiers and Circuit Boards for CNC spindle and axis control.
- Encoders and Linear Motion guides for positioning and feedback.
- Industrial Automation controls, plus Cutting Tools & Bits and Workholding & Toolholding.
Brands Trusted in Machine Tools & CNC
We stock the CNC control and precision-spindle names that machine shops depend on, including Fanuc, GE-Fanuc, Heidenhain, Siemens, and Cincinnati Milacron for controls and drives — alongside super-precision spindle-bearing brands GMN, SNFA, Barden, and Nachi. Browse the full brands directory for everything we carry.
Applications & Use Cases
Machine builders, rebuilders, and production shops come to us for matched super-precision spindle bearing sets during a spindle rebuild, obsolete Fanuc and Siemens Simodrive boards and amplifiers to revive a legacy control, replacement encoders and resolvers for axis feedback, and workholding and tooling spares. Whether you are restoring a decades-old VMC, keeping a grinder in production when the OEM has discontinued a drive, or building a spares kit for a critical machining center, we help you keep the spindle turning and the machine making chips.
In-Stock Parts for Machine Tools & CNC
A live selection of in-stock products relevant to this industry, drawn automatically from our catalog. Availability updates as inventory changes.
Angular Contact Ball Bearing - Straight Bore, 30 mm ID, 47 mm OD, 9 mm Width, Open, 15° Contact Angle, Light Preload.
Fafnir 3MM307WI-DUH Super Precision Angular Contact Bearing Pair (35mm ID, 80mm OD). Heavy preload for rigid, high-accuracy US machine tool spindles.
Cube Incremental Shaft Encoder, Single Channel Square Wave, Open Collector 250 mA, 6000 rpm, 125 kHz
NEMA Size 5 Full-Voltage Non-Reversing Magnetic Motor Starter, 270 A, 600 V AC, 120 V Coil, Open Type, Eutectic Alloy Overload
ControlNet PC Interface Card, ISA Bus, Scheduled and Unscheduled Messaging, Series B
