Product Introduction
The IDAM L7 series is the new generation of high-efficiency, water-cooled, iron-core linear motors from Schaeffler Industrial Drives. L7 expands the peak-force range of water-cooled iron-core linear motors from 5,171 N (L1 series) up to 24,300 N, allowing Schaeffler linear direct drives to be used much more widely in handling systems and the main axes of machine tools.
By combining a highly compact cooling system with an optimised coil system, L7 achieves — compared to the current benchmark — either of:
- a reduction in power loss of up to 50% with the same drive force, or
- an increase in nominal force of up to 40% with the same power loss.
Customer Benefits, Features & Applications
Customer Benefits
- High productivity
- Low unit costs
- Low CO2 emissions
- Higher machine accuracy
Features
- Highly efficient linear motor with water cooling system
- Primary parts available in four widths and three lengths
- Up to 800 V dielectric strength
- Optionally available with secondary part encapsulation, secondary part cooling system, secondary part cover
- Primary part certified to IP65
Applications
- Milling machines
- Turning machines
- Laser machining
- Surface and profile grinding machines
- Centreless grinding machines
- Out-of-round machining
- Oscillation machining
- HSC axes
- PCB drilling machines
The L7 Series — A New Benchmark
The L7 series enables a significant reduction in operating costs and a considerable increase in productivity. The L7 motor demonstrates its strengths particularly in the case of oscillating motion, where high acceleration is required and the motor is continuously heated. The high acceleration capability reduces cycle times and the energy reserves ensure high contour accuracy of the workpiece. As power loss is minimal, less heat is introduced into the machine bed.
The Perfect Motor Configuration for Every Task
The L7 series comprises twelve motor sizes, divided into four secondary part widths (100, 150, 200, 300 mm) and three primary part lengths (350, 500, 650 mm). A secondary part cooling system is available for applications which are particularly sensitive to heat.
Robust and Durable
Highly effective protection against mechanical influences is available for the secondary parts in the form of an optional cover plate, allowing particles such as swarf to be easily removed. Encapsulated secondary parts (also optional) provide excellent protection against liquids, whilst a reinforced insulation system prepares the motors for future electrical requirements. The L7 motors also meet the requirements of the Ecodesign Directive (2009/125/EC).
Motor Components at a Glance
The core of the L7 series consists of a primary part with integrated water cooling system, secondary parts in encapsulated design, an optional secondary part cooling system, and an optional cover plate.
L7 motor components exploded view (Source: PHL en-GB / DE / 2025-01, p.5)
Twelve-Size Family
A complete size matrix combining four secondary part widths (100 / 150 / 200 / 300 mm) with three primary part lengths (350 / 500 / 650 mm).
L7 series 12-size family (Source: PHL en-GB / DE / 2025-01, p.3)
| Secondary part width ＼ Primary part length | 350 mm | 500 mm | 650 mm |
|---|---|---|---|
| 100 mm | 350-100 | 500-100 | 650-100 |
| 150 mm | 350-150 | 500-150 | 650-150 |
| 200 mm | 350-200 | 500-200 | 650-200 |
| 300 mm | 350-300 | 500-300 | 650-300 |
Force Range — Quick Reference
Peak force Fp (Peak force at Ip eff) for each model:
| Model | Winding | Peak force Fp [N] | Continuous force (cooled) Fcw [N] | Continuous force (not cooled) Fc [N] |
|---|---|---|---|---|
| 350-100 | Z1.9H | 4,052 | 1,813 | 661 |
| 500-100 | Z2.8H | 6,078 | 2,700 | 951 |
| 650-100 | Z2.7H | 8,104 | 3,638 | 1,258 |
| 350-150 | Z1.9H | 6,078 | 2,760 | 961 |
| 500-150 | Z2.8H | 9,117 | 4,111 | 1,380 |
| 650-150 | Z2.7H | 12,157 | 5,539 | 1,824 |
| 350-200 | Z2.8H | 8,104 | 3,727 | 1,253 |
| 500-200 | Z2.8H | 12,157 | 5,535 | 1,794 |
| 650-200 | Z3.8H | 16,209 | 7,385 | 2,346 |
| 350-300 | Z2.8H | 12,157 | 5,667 | 1,838 |
| 500-300 | Z2.8H | 18,235 | 8,415 | 2,629 |
| 650-300 | Z3.8H | 24,313 | 11,229 | 3,437 |
Full specifications (Forces / Velocities / Currents / Power losses / Electrical / General / Cooling conditions) are available on each Width sub-series page.
Typical Applications
The L7 series is particularly suited to machine tool applications that demand sizeable feed forces and strict thermal control, such as high-speed cutting (HSC), high-performance cutting (HPC) and various grinding applications.
Grinding is a typical L7 application scenario (Source: PHL en-GB / DE / 2025-01, p.2)
Sub-pages & Technical Documents
Width 100 Series
350-100 / 500-100 / 650-100, peak force 4,052 ~ 8,104 N
View specifications →Width 150 Series
350-150 / 500-150 / 650-150, peak force 6,078 ~ 12,157 N
View specifications →Width 200 Series
350-200 / 500-200 / 650-200, peak force 8,104 ~ 16,209 N
View specifications →Width 300 Series
350-300 / 500-300 / 650-300, peak force 12,157 ~ 24,313 N
View specifications →Technical Principles
Thermal management, water cooling circuit, construction and Ecodesign compliance
Learn more →Type Designation & Glossary
Naming convention, winding codes, technical parameter symbols
View →