What does closed loop mean on this motor?

The motor carries an encoder that reports position back to the driver. The driver compares commanded and actual position and corrects errors, so the motor is less likely to lose steps under load than an open-loop stepper.

Which torque version should I pick?

Match torque to the load: 4.5 Nm for light axes and small routers, 8.5 Nm for mid-size CNC and robotics, and 12 Nm for heavy gantries or high-inertia loads. Extra torque adds weight and current draw, so don't oversize without need.

Can I run it with a standard stepper driver?

No. The encoder feedback only works with a closed-loop (hybrid servo) driver. A plain open-loop driver will run the motor but ignore the encoder, losing the accuracy benefit.

What comes in the box?

Each kit includes the NEMA 34 closed-loop motor with encoder, its driver and a 400W power supply. Multi-axis kits add one motor, driver and power supply per axis.

Is it a drop-in replacement for a NEMA 23 motor?

The mounting pattern and shaft are larger on the 86 mm NEMA 34 frame, so brackets and couplings usually need changing. Plan for the extra weight and space.

CNC milling and routing, robotics, and automated positioning systems that need higher torque and repeatable motion across one to three axes.

1 To 3 Axis NEMA 34 Closed Loop Stepper Motor Kit

Best price now

$3,405.95at VXB.com BearingsChecked Nov 3

Prices are checked against each store and labelled with when.

Visit VXB.com Bearings

1 To 3 Axis NEMA 34 Closed Loop Stepper Motor Kit

Best price now

$3,405.95at VXB.com BearingsChecked Nov 3

Prices are checked against each store and labelled with when.

Visit VXB.com Bearings

Ask our agent about this product

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Price facts

Last seen at $3,405.95 at VXB.com Bearings on Nov 3.

Our take on the 1 To 3 Axis NEMA 34 Closed Loop Stepper Motor Kit

A closed-loop stepper kit built around an 86 mm NEMA 34 frame motor with encoder feedback and a matched driver, sold in 1, 2 or 3 axis configurations. Encoder feedback lets the driver correct missed steps, so positioning stays repeatable under loads that would stall an open-loop motor. Torque comes in 4.5, 8.5 and 12 Nm versions at a 6A current rating, and each kit ships with a 400W power supply. It suits CNC mills, routers, robotics and multi-axis positioning builds that need more holding torque than NEMA 23 hardware delivers, though it is heavier and needs a driver that handles closed-loop feedback.

Best forCNC mill and router builders moving up from NEMA 23Multi-axis robotics and automated positioningRetrofits where missed steps are a problemBuilders who want motor, driver and power supply together

Pros

Encoder feedback corrects missed steps for repeatable positioning
Three torque levels from 4.5 to 12 Nm cover light to heavy loads
6A rating gives strong holding torque
86 mm frame mounts where a standard NEMA 34 fits
400W power supply included, so fewer parts to source
Available in 1, 2 or 3 axis sets to match the machine

Cons

Closed-loop driver needed; open-loop drivers won't use the encoder
Heavier and bulkier than NEMA 23 motors
Higher current draw demands adequate wiring and cooling
Encoder cabling adds wiring work at setup

1 To 3 Axis NEMA 34 Closed Loop Stepper Motor Kit prices at every store

VXB.com BearingsNew
Availability unknown
$3,405.95Checked Nov 3
Visit VXB.com Bearings

1 To 3 Axis NEMA 34 Closed Loop Stepper Motor Kit price history

Lowest price we've seen: $3,405.95 on Nov 3 at VXB.com Bearings. Tracked across 1 store since Nov 3.

From VXB.com Bearings

NEMA 34 closed-loop stepper motor with encoder feedback
Torque options of 4.5, 8.5 and 12 Nm
6A current rating for strong torque
86 mm frame size for compact mounting
Includes 400W power supply and five kit power supplies
Encoder feedback improves repeatability and positioning accuracy

Returns: Free, easy and hassle-free returns on every order
Shipping: Orders currently take 5-10 business days to process before shipping
In the box: 400W power supply, Five kit power supplies

About the 1 To 3 Axis NEMA 34 Closed Loop Stepper Motor Kit

This is a 1 to 3 axis NEMA 34 closed-loop stepper motor kit. Each motor uses encoder feedback, and the kit includes a driver for hybrid servo-style control. It is intended for CNC milling, robotics and automated positioning.

The motors have an 86 mm frame and a 6A current rating. Torque options are 4.5, 8.5 and 12 Nm. Encoder feedback improves repeatability and positioning accuracy, and the NEMA 34 size with 4.5 to 12 Nm of torque supports larger loads without missed steps.

The kit comes with a 400W power supply and five kit power supplies, which speeds up setup and integration.

Motor type: NEMA 34 closed-loop stepper motor with encoder feedback
Axes: 1 to 3 axis kit
Torque options: 4.5 Nm, 8.5 Nm, 12 Nm
Current rating: 6A
Frame size: 86 mm
In the box: 400W power supply, five kit power supplies

Questions and answers

What does closed loop mean on this motor?: The motor carries an encoder that reports position back to the driver. The driver compares commanded and actual position and corrects errors, so the motor is less likely to lose steps under load than an open-loop stepper.
Which torque version should I pick?: Match torque to the load: 4.5 Nm for light axes and small routers, 8.5 Nm for mid-size CNC and robotics, and 12 Nm for heavy gantries or high-inertia loads. Extra torque adds weight and current draw, so don't oversize without need.
Can I run it with a standard stepper driver?: No. The encoder feedback only works with a closed-loop (hybrid servo) driver. A plain open-loop driver will run the motor but ignore the encoder, losing the accuracy benefit.
What comes in the box?: Each kit includes the NEMA 34 closed-loop motor with encoder, its driver and a 400W power supply. Multi-axis kits add one motor, driver and power supply per axis.
Is it a drop-in replacement for a NEMA 23 motor?: The mounting pattern and shaft are larger on the 86 mm NEMA 34 frame, so brackets and couplings usually need changing. Plan for the extra weight and space.
What is it used for?: CNC milling and routing, robotics, and automated positioning systems that need higher torque and repeatable motion across one to three axes.
Where is the 1 To 3 Axis NEMA 34 Closed Loop Stepper Motor Kit cheapest?: At VXB.com Bearings, for $3,405.95, as of our latest check.