85mm Frameless Motor for Industrial Direct Drive

Product Overview of 85mm frameless motor

The 85mm frameless motor delivers enhanced torque capability and thermal stability for demanding direct-drive applications. Designed for industrial and robotic systems, 85mm frameless motor series provides smooth rotation, high efficiency, and excellent control accuracy without the complexity of gear transmission.

Its frameless configuration gives system designers maximum flexibility in mechanical integration and compact system architecture.

frameless motor 50mm-70mm

Key Features

High continuous torque for industrial applications
Low cogging torque for precise positioning
Robust design for long-term operation
Flexible electrical and mechanical customization
Suitable for high-performance servo control

Typical Applications

Application Positioning

The 85mm frameless motor is designed for demanding direct-drive systems with higher load capacity and strict motion control requirements.

Typical Industries & Use Cases

Typical applications include robotic arms, high-load rotary tables, industrial automation equipment, and precision positioning platforms.

Industrial automation equipment
Robotic arms and joint modules
High-load rotary positioning platforms
Medical imaging and diagnostic systems

Integration Value

85mm frameless motor supports stable operation under long duty cycles, helping reduce maintenance needs while improving overall system efficiency.

Technical Specifications (85mm Frameless Motor Series)

The following technical data applies to the 85mm frameless motor 85ZWC25X-1 and 85ZWC35X-1.

Motor Characteristics

Motor part number

85ZWC25X-1

85ZWC35X-1

Stator outer diameter

mm

85±0.043

Rotor inner diameter

mm

52+0.046

Overall length (L)

mm

20.3

30.1

Stack length (L1)

mm

13.8

23.6

Rotor length (L2)

mm

25±0.2

35±0.2

Number of slots

-

18

Pole pairs

-

10

Phase-to-phase resistance

Ω

0.14

0.06

Phase-to-phase inductance

mH

0.34

0.12

Winding connection method

-

Star connection

Insulation class

-

F

Duty type

-

S2

Feedback method

-

Hall sensor

Commutation angle

-

120o

Insulation strength (Withstand voltage)

-

500VAC/1mA/1s

Insulation resistance

-

100MΩ/500VDC

Stator weight

g

315

460

Rotor weight

g

135

189

No-load speed

RPM

3650

4700

No-load current

A

0.6(REF)

2.4(REF)

Rated voltage

VDC

48

Rated power

W

422

827

Rated torque

N·m

1.3

2

Rated speed

RPM

3100

3950

Rated current

A

10.3

20.6

Torque constant

Nm/A

0.16

0.117

Back-EMF constant (effective value)

Vrms/Krpm

9.7

8.66

Peak torque

N·m

3.9

6

Peak current

A

27

62

Rotor inertia

g·cm²

1086

1520

Dimension Drawing

85mm frameless motor 85ZWC25X-1

85ZWC25X-1 85mm frameless motor drawing

85mm frameless motor 85ZXC35X-1

85ZWC35X-1 85mm frameless motor drawing

Lead-out type

Lead-out color

Function

UL1332 AWG16

Yellow

U phase

Red

V phase

Black

W phase

85mm frameless motor wiring

Torque Performance Curves

85mm frameless motor 85ZWC25X-1

85ZWC25X-1 85mm frameless motor curve

85mm frameless motor 85ZXC35X-1

85ZWC35X-1 85mm frameless motor curve

frameless motor.pdf

FAQ – 85mm Frameless Motor

Q1: Is the 85mm frameless motor suitable for robotic arms?

Yes, 85mm frameless motor is commonly used in medium-to-large robotic joints.

Q2: Can 85mm frameless motor operate at high torque continuously?

Yes, with appropriate thermal management.

Q3: Does 85mm frameless motor support precise positioning?

Yes, 85mm frameless motor is ideal for high-accuracy positioning systems.

Q4: Is customization available for OEM projects?

Yes, both electrical and mechanical customization are supported.

Q5: Can 85mm frameless motor be integrated without a gearbox?

Yes, 85mm frameless motor is designed specifically for direct-drive applications.

Q6: Which markets is this motor designed for?

Primarily Europe and North America.

85mm Frameless Motor for Industrial Direct Drive and Robotics Systems

Product Overview of 85mm frameless motor

Key Features

Product Overview of 85mm frameless motor

Key Features

Typical Applications

Application Positioning

Typical Industries & Use Cases

Integration Value

Typical Applications

Application Positioning

Typical Industries & Use Cases

Integration Value

Technical Specifications (85mm Frameless Motor Series)

Technical Specifications (85mm Frameless Motor Series)

FAQ – 85mm Frameless Motor

FAQ – 85mm Frameless Motor

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