What does closed-loop mean on these motors?

An encoder on the motor shaft reports actual position to the driver, which corrects for missed steps. That gives better positioning accuracy than an open-loop stepper, which never knows it stalled.

Why do these motors have a brake?

The brake clamps the shaft when power is removed, holding the load in place. It is useful on Z axes, vertical lifts and tool-change positions where a falling load would damage work or the machine.

Which torque rating should I choose?

Match it to the moving mass and acceleration of each axis. Lighter gantries and rotary axes suit the lower rating; heavy gantries and high-inertia loads need the higher one. Oversizing costs weight and current draw, undersizing causes stalls.

Do I need anything else to run them?

The set includes the HBS860H and HBS86H drivers and a 400W 60V power supply. You still need a motion controller or breakout board that sends step and direction signals, plus wiring for the encoders and brakes.

Can I use these with a standard CNC controller?

Yes, if the controller outputs step and direction pulses. The drivers accept those signals, so Mach3, LinuxCNC and similar setups work; check that your controller has enough axes and inputs for the brake lines.

Four Set Nema 34 Closed Loop Motors with Brake

Best price now

$3,626.95at VXB.com BearingsChecked Nov 3

Prices are checked against each store and labelled with when.

Visit VXB.com Bearings

Four Set Nema 34 Closed Loop Motors with Brake

Best price now

$3,626.95at 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 $3,626.95 at VXB.com Bearings on Nov 3.

Our take on the Four Set Nema 34 Closed Loop Motors with Brake

A four-pack of NEMA 34 closed-loop stepper motors with electromagnetic brakes, paired with HBS860H and HBS86H drivers and a 400W 60V power supply. Encoder feedback closes the loop, so the driver corrects for lost steps under load instead of stalling silently the way an open-loop stepper does. The brake holds the shaft when power drops, which matters on Z axes and vertical lifts where a dropped load is a crash. It suits CNC builders, router and plasma tables, and automation retrofits that want servo-like positioning without a full servo setup; the trade-off is that closed-loop steppers still lose torque at high speed compared with true AC servos.

Best forCNC router and mill builders sizing a full 4-axis drive trainRetrofits replacing open-loop NEMA 34 steppersVertical or Z-axis setups that need holding torque on power-offAutomation and carving systems needing repeatable positioning

Pros

Encoder feedback corrects position errors under load
Brake holds the load when power is cut
Drivers and power supply included, so the electronics match the motors
Three torque ratings cover light to heavy gantry loads
Four motors in one set suits a complete X/Y/Z plus rotary build

Cons

Closed-loop steppers still lose torque at high RPM versus AC servos
Brake motors are longer and heavier than plain NEMA 34 frames
Wiring encoders and brakes adds setup work over open-loop
Torque rating depends on picking the right motor for the load

Four Set Nema 34 Closed Loop Motors with Brake prices at every store

VXB.com BearingsNew
Availability unknown
$3,626.95Checked Nov 3
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Four Set Nema 34 Closed Loop Motors with Brake price history

Lowest price we've seen: $3,626.95 on Nov 3 at VXB.com Bearings. Tracked across 1 store since Nov 3.

From VXB.com Bearings

Four-set NEMA 34 closed-loop stepper motors with brake
Torque options: 4.5 Nm, 8.5 Nm, 12 Nm
6A peak current
Integrated closed-loop control with encoder feedback
Includes HBS860H and HBS86H drivers
Includes 400W 60V power supply

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: Four NEMA 34 closed-loop stepper motors with brake, HBS860H and HBS86H drivers, 400W 60V power supply

About the Four Set Nema 34 Closed Loop Motors with Brake

This is a set of four NEMA 34 closed-loop stepper motors with a brake. It is intended for CNC machines, 3D printers, carving systems and other automation setups.

Each motor uses encoder feedback for closed-loop control, which improves positioning accuracy. The brake holds the motor in position, which helps during tool changes. The motors work with HBS860H and HBS86H drivers for torque management.

The set comes with the drivers and a 400W 60V power supply. Torque options are 4.5 Nm, 8.5 Nm and 12 Nm.

Frame size: NEMA 34
Quantity: 4 motors
Torque options: 4.5 Nm, 8.5 Nm, 12 Nm
Peak current: 6A
Control: Closed loop with encoder feedback
Brake: Yes
Drivers: HBS860H and HBS86H
Power supply: 400W, 60V
In the box: 4 NEMA 34 closed-loop stepper motors with brake, HBS860H and HBS86H drivers, 400W 60V power supply

Questions and answers

What does closed-loop mean on these motors?: An encoder on the motor shaft reports actual position to the driver, which corrects for missed steps. That gives better positioning accuracy than an open-loop stepper, which never knows it stalled.
Why do these motors have a brake?: The brake clamps the shaft when power is removed, holding the load in place. It is useful on Z axes, vertical lifts and tool-change positions where a falling load would damage work or the machine.
Which torque rating should I choose?: Match it to the moving mass and acceleration of each axis. Lighter gantries and rotary axes suit the lower rating; heavy gantries and high-inertia loads need the higher one. Oversizing costs weight and current draw, undersizing causes stalls.
Do I need anything else to run them?: The set includes the HBS860H and HBS86H drivers and a 400W 60V power supply. You still need a motion controller or breakout board that sends step and direction signals, plus wiring for the encoders and brakes.
Can I use these with a standard CNC controller?: Yes, if the controller outputs step and direction pulses. The drivers accept those signals, so Mach3, LinuxCNC and similar setups work; check that your controller has enough axes and inputs for the brake lines.
Where is the Four Set Nema 34 Closed Loop Motors with Brake cheapest?: At VXB.com Bearings, for $3,626.95, as of our latest check.