Direct Drive Linear Motors

A Direct Drive Linear (DDL) motor is basically a rotary motor that is laid out flat and directly coupled to the driven load. By eliminating mechanical transmission components, this design delivers exceptional performance, stiffness, dynamic speeds and accelerations, positional accuracy, and throughput. DDL motors also enable compact mechanical assembly, quiet operation, zero maintenance and smooth, error-free motion.
 

Features

• Highest rated thrust force per size—ideal for accelerating and moving high masses
• Maintains the stiffness required for machining and other process forces
• Zero maintenance
• No ball screws, gearboxes, rack and pinions, or belts and pulleys
• Zero backlash and compliance

• High stiffness
• High positional accuracy
• Compact mechanical assembly
• Reduced machine parts count
• Very smooth velocity

Iron Core Linear Motors

Iron core linear motors have coils wound around silicon steel laminations to maximize the generated force with a single sided magnet way. These motors’ special electromagnetic design delivers the highest rated force per size, a high Km motor constant for low thermal losses, and low cogging forces. The high thrust forces possible with these motors make them ideal for accelerating and moving high masses, and maintaining stiffness during machining and processing.

Iron Core Specifications

Non-Cooled

Max. Force (N)	Continuous N	Continuous (lbf)	Peak N	Peak (lbf)
IC11	144 to 1197	32.4 to 269	320 to 2135	71.9 to 480
IC22	280 to 2393	62.9 to 538	624 to 4156	140 to 934
IC33	431 to 3590	96.9 to 807	944 to 6291	212 to 1414
IC44	560 to 4786	126 to 1076	1259 to 8388	283 to 1885
ICD05	57 to 157	12.8 to 35.3	165 to 588	37.1 to 132
ICD10	104 to 315	23.4 to 70.8	330 to 1099	74.2 to 247

 

Water-Cooled

Iron-Less Linear Motors

Iron-less linear motors have no iron or slots for the coils to be wound on. Therefore, these motors have zero cogging, a very light, and absolutely no attractive forces between the coil assembly and the magnet way. These characteristics are ideal for applications requiring very low bearing friction, high acceleration of lighter loads, and for maximizing constant velocity, even at ultra low speeds. The modular magnet ways consist of a double row of magnets to maximize the generated thrust force and to provide a flux return path for the magnetic circuit.

Iron-Less Specifications

	Max. Force (N)
	Continuous		Peak
	N	(lbf)	N	(lbf)
IL06	30.3 to 82.8	6.81 to 18.6	120 to 400	27 to 89.9
IL12	62.1 to 148	14 to 33.3	240 to 800	54 to 180
IL18	92.1 to 211	20.7 to 47.4	360 to 1200	80.9 to 270
IL24	109 to 262	24.5 to 58.9	480 to 1600	108 to 360

SELECTION GUIDE DESIGN TOOLS

Direct Drive Linear Product Selector