Blog in Motion | Mosrac Motor

U25 Series 25MM Smallest Frameless Motors
Mosrac U25 series frameless direct drive motors (robot joint motors) are designed to be directly embedded in your machine, providing the highest perfo...
U38 Series 38MM Frameless Torque Motor
A frameless motor with a 38mm outer diameter and an 18mm aperture, designed for direct drive of robot joints, provides stable torque and precise speed...
U50 50MM Series Frameless Motor
A frameless torque motor (Frameless torque servo motor) with a 28mm aperture and a 50mm outer diameter directly drives robot joints. Rated torque opti...
U60 60MM Series Frameless BLDC Motor
A 60mm OD frameless torque motor can directly drive robot joints with optional rated torque. Highly customizable with various options to meet your spe...
U68 68MM Series Frameless Rotary Motors
This frameless rotary motors, with a 68mm outer diameter and 37mm aperture, mounts on a 37mm shaft to directly drive robot joints. Available torques: ...
U76 Series Brushless DC Frameless Motors
This brushless DC frameless motor, with a 76mm outer diameter and 42mm aperture, mounts on a 42mm shaft to directly drive robot joints. Available opti...

What is a BLDC Motor? A Comprehensive Guide to Brushless DC Motors

2024-12-16

Discover what a BLDC motor, its working principles, types, benefits, and real-world applications, with insights into some advanced product solutions and innovat...

Glossary for Frameless Motor

2024-12-06

Glossary for Frameless Motor

Motor Encoders - Types, Features, Advantages, Applications, And Choosing the right one

2024-12-06

Are you looking for high-quality motor encoders? This article will provide thorough information and analysis about motor encoders' different types, characterist...

How to Choose the Right Torque Motor: 14 Essential Criteria

2024-12-03

How can you find the high-quality right torque motor for applications? In this article, you will be familiar with the various characteristics of the right torqu...

Brushless Vs Brushed Motors Explained for Beginner To Advanced Users

2024-12-03

Brushless motors are more efficient, last longer, and require less maintenance than brushed motors. Brushed motors are cost-effective and come in a simple desig...

8 Different Types of Robot Motors: What They Are, Why Use Them, and How to Choose Motor

2024-12-11

Looking for high-quality robot motors? In this article, you will get ideas on choosing the high-quality robot motor among various types of robot motors based on...

How To Mount and Install Frameless Brushless Motor? The Complete Beginners Guide

2024-11-06

Ensure a safe frameless brushless motor mounting and installation by using locknuts. Protect the rotor with Mylar film and check the running gap for smooth oper...

Torque Motor - Types, Features, Advantages, Applications and Choosing the Right One

2024-11-06

In this article, you will get comprehensive information and analysis regarding types, properties, applications, advantages of torque motors.

14 Different Types of Encoders for Various Types of DC Motors

2024-12-11

In this article, you will get a complete analysis regarding features, applications, differences between different types of encoders, and selection criteria for ...

Frameless Motor VS Brushless Motor: Which is Right for You?

2024-11-06

Frameless motors offer compact design benefits, while brushless motors excel in efficiency. Check which motor is suitable for your needs here.

Types Of Frameless Motor: Find Out Which Type Is Best For You

2024-10-09

There are many types of frameless motors available, such as outrunner, inrunner, direct drive, and many more motors. Each comes with different features and bene...

A (Frameless) Outrunner Motor: Here's What You Will Learn

2024-12-03

Outrunner motors offer powerful performance and efficiency. Besides, these motors are perfect for robotics, electronics, industrial and medical devices.

Motor Pole Count: What It Is & How to Determine It? (+ Tips)

2024-12-11

Learn what motor pole count is, the pros and cons of having a high pole count motor, and how it affects performance, efficiency, and more.

How To Select a Frameless Torque Motor For a Robot Joint?

2024-12-03

This post provides some tips and the requirements for selecting a frameless direct-drive torque motor kit for robotic joints and arm joints.

The Frameless Motor: What it is, How it works, & Where to use it

2024-12-11

Discover the benefits of frameless motors and their applications in various industries. Learn more about frameless motor technology on our website today.

Best Frameless Torque Motor Manufacturers

2024-12-03

If precision motion matters to your operations, trust these top frameless torque motor manufacturers. Discover some of the best manufacturers in this guide.

Available torque motor & encoder solutions

We offer standard or customized industry-matched frameless, DD motors, and magnetic encoders for your needs.

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Blog in Motion | Mosrac Motor

Available torque motor & encoder solutions

Frameless Inrunner Motor

Frameless Outrunner Motor

Direct Drive Rotary Motor

Magnetic Encoder

Magnetic Dual Encoder

Custom Solution

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Model	OD(mm)	ID(mm)	Height(mm)	Rated Torque(Nm)	Rated Power(W)	Rated Speed(rpm)
U25 Series	25	11.6	10.8~23.4	0.025~0.075	10.48~31.44	4000
U38 Series	38	18	15.3~34.3	0.1~0.35	31.4~110.0	3000
U50 Series	50	28	19.8~37.9	0.27~0.7	84.89~220.08	3000
U60 Series	60	33	17.7~35.8	0.45~0.96	141.48~301.82	3000
U68 Series	68	37	18.3~36.4	0.63~1.54	198.07~484.18	3000
U76 Series	76	42	18.6~36.7	0.89~2.06	279.82~647.66	3000
U85 Series	85	47	19.3~37.4	1.21~2.69	380.42~845.74	3000
U94 Series	94	51	19.7~37.8	1.58~3.67	496.75~576.92	1500~3000
U115 Series	115	65	26.3~44.4	3~6.1	943.2~958.92	1500~3000
U130 Series	130	84	25.9~60.9	5~18	419.2~754.56	400~800
U160 Series	160	106	25.9~60.9	9~32	471.6~670.72	200~500
U200 Series	200	140	25.9~60.9	13~50	408.72~524	100~300

Mode	OD(mm)	ID(mm)	Height(mm)	Rated Torque(Nm)	Rated Power(W)	Rated Speed(rpm)	Voltage(V)
FI-40 Series	40	6.5	48~65	0.25	7.9	300	220
FI-60 Series	60	15	60~80	0.5	15.7	300	220
FE-80 Series	80	15	47~67	1	21	200	220
FI-80 Series	80	12	50	0.9	28.3	300	220
FE-112 Series	112	19	65~95	3	62.9	200	220
FI-120 Series	120	42	64	2.4	37.7	150	220
FE-140 Series	140	30	50~80	6	188.6	300	220
FI-140 Series	140	28	85~188	10.5	220.1	200	220
FE-170 Series	170	42	50~155	4.5	117.9	250	220
FI-170 Series	170	50	50~100	5.4	141.5	250	220
FI-180 Series	180	50	55~125	14	220.1	150	220
FI-220 Series	220	30	123~208	50.6	530.3	100	220
FE-224 Series	224	50	42~62	14.1	295.5	200	220
FI-224 Series	224	50	42	9.9	155.6	150	220
FE-263 Series	263	88	113~188	95	796.5	80	220
FI-280 Series	280	60	95~145	45	565.9	120	220
FI-300 Series	300	150	75	35	330.1	90	220
FI-375 Series	375	88	150~200	200	1257.6	60	220

Series	Types	RotorID	StatorOD	Stator installation pitch circle	Stator shieldOD	Overall thickness
10	Standard Compact	8/10 8/10	36 27	25 23	20	7
15	Standard Compact	12/13/15 12/13/15	40 32	30 28	25	7
20	Standard Standard Compact	6/8/10 15/18/20 18/20	45 45 37	36 36 33	30	7
25	Standard Compact	23/25	50 42	40 38	35	7
30	Standard Compact	28/30	55 47	45 43	40	7
35	Standard Compact	33/35	60 52	50 48	45	7
40	Standard Compact	38/40	65 57	55 53	50	7
45	Standard Compact	43/45	70 62	60 58	55	7
50	Standard Compact	48/50	75 67	65 63	60	7
55	Standard Compact	53/55	80 72	70 68	65	7

Series	Model	Inner rotorThread	Inner rotorMatch ID (H7)	Outer rotor Thread	Outer rotorMatch ID (H7)	StatorMatch ID (H7)
10-15-25	T-10-15-25	M10x0.4mm	9	M15x0.4mm	14	25
15-20-30	T-15-20-30	M15x0.4mm	14	M20x0.4mm	19	30
20-25-35	T-20-25-35	M20x0.4mm	19	M25x0.4mm	24	35
25-30-40	T-25-30-40	M25x0.4mm	24	M30x0.4mm	29	40
30-35-45	T-30-35-45	M30x0.4mm	29	M35x0.4mm	34	45