SycoTec 4026 AC PCB Router Spindle Motor with 60,000 rpm Maximum Speed 250 W Power and 4.5 Ncm Torque

The SycoTec 4026 AC spindle motor, reference number 0674 2160, is a compact high-frequency motor spindle developed for precision CNC machining applications such as PCB routing, drilling, milling, grinding, and engraving. With an operating speed range of 5,000 to 60,000 rpm, continuous and maximum power of 250 W, and torque of 4.5 Ncm, it provides the high rotational speed required by small-diameter cutting tools used in precision production.

The spindle features a 33 mm stainless-steel housing, C1-8 collet system, manual tool change, and a tool clamping range from 0.5 to 4.0 mm, including commonly used 1/8-inch tools. Its compact construction makes it particularly suitable for PCB cutting machines, PCB router systems, precision CNC equipment, and automated machining platforms where installation space and machining accuracy are important.

For maintenance departments, machinery service providers, PCB factories, automation companies, and global spare-parts distributors, the 4026 AC provides a clearly identifiable spindle solution for replacement, scheduled maintenance, machine rebuilding, and spare inventory.

A spindle is one of the most heavily loaded rotating components inside a PCB cutting or precision CNC machine. During production, the spindle may operate at very high speed for extended periods while small carbide cutting tools continuously remove PCB laminate, composite material, plastic, or other machinable materials.

Over time, mechanical wear, contamination, incorrect tooling, or unsuitable operating conditions can affect performance.

High-speed bearings operate continuously under rotational load. As bearing condition deteriorates, the spindle may develop:

• Increased operating noise
• Higher vibration
• Reduced machining accuracy
• Abnormal spindle temperature
• Rough cutting surfaces
• Increased cutter consumption

Ignoring bearing-related symptoms can eventually result in unexpected machine downtime.

PCB routing frequently uses small-diameter carbide cutters. These tools require accurate rotation because even small radial deviations can affect the finished edge.

Excessive runout may cause:

• Uneven PCB edges
• Oversized routing paths
• Premature cutter breakage
• Increased machining vibration
• Reduced dimensional accuracy
• Lower surface quality

The 4026 AC is specified with concentricity of ≤1.5 μm, making correct spindle and tool installation particularly important.

The collet directly holds the cutting tool.

PCB dust, resin particles, metal debris, or repeated tool replacement may reduce clamping quality. A damaged or dirty collet can cause the tool to sit off-center, resulting in vibration and inconsistent cutting.

Regular collet cleaning and inspection are therefore important for maintaining spindle performance.

A healthy high-speed spindle normally produces a consistent operating sound.

A change in sound may indicate:

• Bearing deterioration
• Tool imbalance
• Loose tooling
• Mechanical contact
• Incorrect spindle mounting
• Excessive machining load

When abnormal sound continues after checking the cutting tool and installation, spindle inspection may be required.

High-frequency spindle systems generate heat during operation.

Unusual temperature increases may result from:

• Excessive machining load
• Incorrect drive settings
• Inadequate cooling
• Bearing problems
• Poor mounting contact
• Restricted airflow
• Continuous operation outside recommended conditions

An overheated spindle should be inspected before continued production.

When a previously stable PCB router begins producing poor edges, inconsistent routing dimensions, frequent tool breakage, or unusual vibration, the spindle should be included in the maintenance inspection.

Other possible causes such as cutter condition, machine alignment, fixture condition, programming, and material quality should also be checked before replacement.

For equipment configured around the 4026 AC, selecting the correct model and reference number provides a more reliable approach than purchasing a spindle based only on appearance or housing diameter.

The 4026 AC combines high rotational speed with a compact body and precision small-tool holding system.

• Model: 4026 AC
• Reference Number: 0674 2160
• Maximum Speed: 60,000 rpm
• Speed Range: 5,000–60,000 rpm
• Power: 250 W
• Torque: 4.5 Ncm
• Housing Diameter: 33 mm
• Motor Type: Three-Phase Asynchronous Motor
• Collet Type: C1-8
• Tool Range: 0.5–4.0 mm
• Tool Change: Manual
• Housing: Stainless Steel

These specifications make the spindle suitable for high-speed precision applications using relatively small cutting tools.

Although the 4026 AC and 4025 AC share several basic performance parameters, buyers should not automatically consider them interchangeable.

The tool-holding system is one of the most important differences. Customers should verify the original spindle model and collet configuration before ordering.

The SycoTec 4026 AC can be used in compatible industrial machining equipment where compact dimensions, small cutting tools, and high rotational speed are required.

One of the most relevant applications is PCB routing.

During PCB depaneling, a rotating carbide router bit follows a programmed path to separate individual printed circuit boards from a panel.

Spindle performance directly affects:

• PCB edge quality
• Routing accuracy
• Cutter life
• Production stability
• Machine vibration
• Cutting consistency

The 60,000 rpm maximum speed supports the small cutting tools commonly used in PCB processing.

The spindle is suitable for compatible PCB cutting machines equipped for a 33 mm spindle body and corresponding electrical interface.

Typical users include:

• PCB manufacturers
• Electronics assembly factories
• EMS companies
• Router machine repair companies
• Automation equipment manufacturers
• Machine maintenance departments

Because machine configurations vary, the existing spindle label and electrical system should always be checked before replacement.

Small drilling tools generally require high rotational speed to maintain suitable cutting speed.

The C1-8 system accommodates tools between approximately 0.5 and 4.0 mm, making the spindle useful for precision drilling operations when machine parameters are compatible.

Potential applications include:

• PCB drilling
• Plastic drilling
• Composite drilling
• Prototype machining
• Small-component machining

The 4026 AC can also support light milling operations.

Potential workpieces include:

• PCB laminate
• Engineering plastics
• Composite panels
• Light machining materials
• Prototype components

Cutting depth and feed rate must always be selected according to tool size, material, spindle load, and machine rigidity.

Small engraving tools perform effectively at high rotational speed.

Suitable applications may include:

• Product marking
• Fine contour engraving
• Plastic panel engraving
• Prototype identification
• Precision surface machining

The spindle can also be used for suitable grinding processes with correctly rated tools.

Operators should confirm that any grinding tool used at high spindle speed is properly balanced and approved for the intended rotational speed.

The SycoTec 4026 AC combines an electric motor and precision spindle shaft into a compact high-speed unit.

A compatible frequency inverter supplies controlled three-phase electrical power to the asynchronous motor.

The operating frequency determines spindle rotational speed.

The 4026 AC operates within a frequency range of approximately 83–1,000 Hz.

Electrical energy is converted into rotational mechanical movement.

The spindle rotor transfers this movement directly to the tool-holding system, allowing the cutting tool to operate at speeds up to 60,000 rpm.

The C1-8 collet centers and clamps the router bit, drill, milling cutter, or engraving tool.

Supported tool diameter:

Ø0.5–4.0 mm, including 1/8-inch tools.

Correct collet condition is important for maintaining low runout.

The spindle creates the cutting rotation while the machine controls movement along the required axes.

In PCB routing equipment, the controller moves the cutter according to programmed board geometry.

The high-speed tool removes material along the programmed route.

Cutting quality depends on several factors:

• Spindle speed
• Cutter diameter
• Cutter condition
• Feed rate
• Workpiece material
• Cutting depth
• Machine rigidity
• Dust extraction
• Collet condition

PCB router bits often have relatively small diameters.

Small cutting diameters require higher spindle speed to achieve suitable cutting velocity. Insufficient speed can increase cutting force and reduce edge quality.

A 60,000 rpm spindle can provide benefits such as:

• Cleaner routed edges
• Efficient material removal
• Improved small-tool cutting performance
• Reduced cutting load when parameters are correctly selected
• Better routing consistency

However, maximum speed should not automatically be used for every process. The correct speed depends on tool geometry, board material, cutting depth, and feed rate.

Tool concentricity is particularly important in PCB routing.

The 4026 AC is specified with spindle concentricity of ≤1.5 μm.

Low runout can help:

• Reduce vibration
• Improve dimensional control
• Extend cutter life
• Maintain consistent routing width
• Produce cleaner PCB edges

To preserve precision, always use clean and undamaged collets and correctly balanced tools.

The spindle incorporates:

• 2 hybrid bearings
• 1 steel bearing
• Lifetime lubrication

The bearing arrangement supports high-speed rotational operation without routine bearing lubrication.

However, users should continue monitoring:

• Spindle noise
• Temperature
• Vibration
• Runout
• Cutting results

Lifetime lubrication does not eliminate the need for proper operating conditions and machine maintenance.

The 4026 AC supports self-cooling through a fan under reduced-power conditions and cooling through the clamping bracket depending on installation configuration.

Proper heat management is important because excessive spindle temperature can shorten component life.

Before installation, inspect:

• Spindle holder condition
• Cooling arrangement
• Mounting contact
• Machine airflow
• Ambient temperature
• Production load

The spindle housing is manufactured from stainless steel.

This provides a durable external structure for industrial machining environments and helps protect the internal spindle assembly during normal machine operation.

The 33 mm housing diameter is also a key identification parameter during replacement.

The 4026 AC uses manual tool changing with an open-end wrench.

A typical tool-change process includes:

1. Stop spindle rotation completely.
2. Follow the machine's electrical safety procedure.
3. Clean the spindle and collet area.
4. Inspect the cutter for wear or damage.
5. Loosen the tool-holding mechanism.
6. Remove the old tool.
7. Clean the collet.
8. Insert the new tool correctly.
9. Tighten securely.
10. Check tool alignment before returning to production.

Correct tool replacement reduces the risk of unnecessary spindle vibration.

Selecting a replacement spindle should involve more than matching the product appearance.

Use the following procedure before ordering.

Check the original label for:

SycoTec 4026 AC

Do not order solely according to the appearance of the spindle.

The relevant reference number is:

0674 2160

Reference-number verification is especially useful when distinguishing similar spindle versions.

Confirm the machine was designed around a:

60,000 rpm maximum-speed spindle.

The spindle housing diameter is:

33 mm

The machine holder must match the required installation diameter.

The 4026 AC uses:

C1-8

Do not confuse this configuration with C2 spindle versions.

The standard tool range is:

Ø0.5–4.0 mm

If your PCB router uses 1/8-inch shank tools, verify the exact installed collet specification.

Before connection, verify:

Incorrect electrical configuration can lead to poor performance or spindle damage.

The spindle uses a 3PM cable / connector configuration.

Customers should check the connector and existing cable before ordering.

For international orders, sending a clear nameplate photo is strongly recommended.

Useful photos include:

• Full spindle
• Product label
• Electrical connector
• Tool end
• Existing cable
• Machine model label

These photos help reduce ordering errors.

Different spindles may use the same or similar external dimensions but have different electrical and mechanical configurations.

The collet system determines which tooling can be installed.

A spindle with the correct diameter but wrong collet type may not match the machine's existing tool system.

The model and reference number together provide better identification than a generic description such as “60,000 rpm spindle.”

The 4025 AC and 4026 AC share several performance specifications but use different tool-holding configurations.

Incorrect drive parameters may result in:

• Excessive current
• Poor torque
• Incorrect speed
• Overheating
• Drive alarms
• Motor damage

Installation should be carried out by qualified machine maintenance personnel.

Before removing the original spindle, record:

• Cable connection
• Drive parameters
• Installation depth
• Spindle orientation
• Machine offsets
• Tool position

During installation:

• Keep the spindle clean.
• Avoid impacts to the spindle shaft.
• Inspect the mounting holder.
• Confirm correct electrical connection.
• Install a clean and balanced tool.
• Verify rotation before production.
• Monitor temperature and vibration during initial operation.

The spindle is designed with lifetime-lubricated bearings, but related machine components still require routine inspection.

A worn cutting tool places additional mechanical load on the spindle.

Potential consequences include:

• Increased vibration
• Higher temperature
• Poor PCB edges
• Higher cutting force
• Increased bearing load
• Frequent tool breakage

Factories processing large quantities of PCBs should establish router-bit replacement intervals according to production experience.

For factories where PCB routing is a critical production process, keeping a spare spindle can reduce emergency downtime.

A spare 4026 AC may be useful for:

• Preventive maintenance
• Unexpected spindle failure
• Production expansion
• Machine overhaul
• Repair preparation
• Critical spare-parts inventory

The required spare quantity can be determined according to machine quantity, operating hours, production importance, and procurement lead time.

The product is suitable for purchasing requirements from:

• PCB manufacturing factories
• Electronics assembly factories
• EMS companies
• PCB router machine users
• Equipment service companies
• Automation manufacturers
• CNC equipment integrators
• Industrial maintenance teams
• SMT and PCB spare-parts distributors
• International machinery parts importers

The 4026 AC is a high-frequency motor spindle suitable for drilling, milling, grinding, and engraving applications. It is particularly relevant to compatible PCB router and PCB cutting equipment using small-diameter high-speed cutting tools.

The spindle operates from 5,000 to 60,000 rpm, provides 250 W power and 4.5 Ncm torque, uses a 33 mm housing, and features a C1-8 collet supporting tools from 0.5 to 4.0 mm.

The corresponding reference number is 0674 2160. Buyers are encouraged to confirm both the model and reference number against the existing machine spindle before ordering.

They should not automatically be considered interchangeable. Both models have similar speed, power, torque, and housing size, but the 4026 AC uses a C1-8 tool-holding system while the 4025 AC uses C2.

Please provide 4026 AC / 0674 2160, required quantity, machine model, destination country, and preferably clear photos of the existing spindle nameplate and connector. This information helps us confirm the correct product before quotation.

Need a SycoTec 4026 AC PCB Router Spindle Motor 0674 2160 for machine repair, scheduled maintenance, production backup, or spare-parts inventory?

Send us the following information:

• Product model
• Reference number
• Required quantity
• Machine model
• Existing spindle photos
• Destination country
• Required delivery schedule

We can assist with model verification, stock confirmation, quotation, export packaging, accessory requirements, and international shipment arrangements.

For faster quotation processing, please include “4026 AC / 0674 2160” in your inquiry.