AL28xx Linear Servomotors

AL28xx | Linear Servomotors

The 3-phase synchronous Linear Servomotors AL2800 expand the high-performance product range. The coil unit contains a grooved, laminated core with inlaid copper windings. It is generally used as the moving part. The magnet plate contains the steel plate to which the permanent magnets are fixed.

The AL2800 series consists of four different motors, all having exactly the same width of 130 mm. This means that all the motors can be operated using the same magnet plates. There are two different lengths of magnet plates that can be combined in any desired way. The magnet plates are fully sealed and therefore have an almost perfectly level and robust surface.

The coil units are also potted, satisfy protection class IP 64, and are therefore suitable for use in aggressive environments. Coil units are fitted with a 0.5 m cable bundle and optionally with pre-assembled connectors, so that they can be connected to the connector box or the Servo Drive via plugged connections. This greatly reduces the difficulty of implementing the cabling and makes a significant contribution to avoiding errors.

IIn combination with the EtherCAT Servo Drive AX5000, the AL2xxx series linear motors are particularly suitable for dynamic movements where high acceleration is required over short distances.

All linear motors of the series AL2xxx have the same magnet pitch (24 mm).

The motor connection is compatible with the other types of the AL2xxx series.




Scaleless feedback system for Linear Servomotors

The MES system registers the magnetic field of the permanent magnets of the magnet plate. It sends, with the aid of built-in electronics, encoder signals for commutation as well as speed and position control to the AX2xxx/AX5000 series Servo Drive. The MES provides one sine wave per 24 mm pole pitch and a precision of 1/10 mm.


Connector box

As a further accessory, Beckhoff offers an adapter box with motor, feedback and thermal protection line connected on one side. The pre-assembled motor and encoder lines can be attached on the other side.

AL28xx Linear Servomotors | Dimensions

Dimensions b la h
AL2812 130 mm 244 mm 45 mm
AL2815 130 mm 290 mm 45 mm
AL2830 130 mm 568 mm 45 mm (1)
AL2845 130 mm 852 mm 47 mm

(1) Height h deviating for water-cooled variant: h = 47 mm

Technical drawings

Technical data AL2812 AL2815 AL2830 AL2845
Winding type N | S
Speed max. 3 m/s (N),
6 m/s (S)
2.5 m/s (N),
6 m/s (S)
2.5 m/s (N),
6 m/s (S)
2.5 m/s (N),
6 m/s (S)
Motor configuration 3-phase synchronous Linear Servomotors (400…480 V AC)
Peak force 6 sec. (FP) 1600 N 2000 N 4000 N 6000 N
Peak current (IPa) 13 A (N),
26 A (S)
13.5 A (N),
33 A (S)
27 A (N),
66 A (S)
41 A (N),
98 A (S)
Continuous force with water cooling (Fcw) 2000 N 3000 N
Continuous force with air cooling (Fca) 760 N 950 N 1900 N 2850 N
Continuous current with water cooling (Icw) 8.9 A (N),
21.5 A (S)
13.4 A (N),
32.3 A (S)
Continuous current with air cooling (Ica) 4.1 A (N),
8.2 A (S)
4.2 A (N),
10.2 A (S)
8.5 A (N),
20.5 A (S)
12.5 A (N),
31 A (S)
Force constant (Kf) 186 N/A (N),
93 N/A (S)
225 N/A (N),
93 N/A (S)
225 N/A (N),
93 N/A (S)
225 N/A (N),
93 N/A (S)
Motor constant (Km) 1750 N²/W 2150 N²/W 4300 N²/W 6450 N²/W
Magnet pitch 24 mm
Magnetic attraction force (Fa) 3400 N 4150 N 8300 N 12450 N
Weight of the coil (Mp) 4.9 kg 5.9 kg 11.6 kg 18.2 kg
Air gap 0.5 mm
Temperature sensor PTC 1 kΩ
Corresponding Servo Drive AX5x06 (N),
AX5112 (S)
AX5x06 (N),
AX5118 (S)
AX5112 (N),
AX5125 (S)
AX5118 (N),
AX5140 (S)
Ordering information AL28xx-000x-000y coil unit
AL2812-000x-000y Linear Servomotor, 400…480 V, Fp = 1800 N, FCa = 760 N
AL2815-000x-000y Linear Servomotor, 400…480 V, Fp = 2250 N, FCa = 950 N
AL2830-000x-0000 Linear Servomotor, 400…480 V, Fp = 4500 N, FCa = 1900 N
AL2830-100x-0000 Linear Servomotor, 400…480 V, Fp = 4500 N, FCa = 1900 N, water cooling
AL2845-100x-0000 Linear Servomotor, 400…480 V, Fp = 6750 N, FCa = 2850 N, water cooling

Option x = 0: N type, x = 1: S type

Option y = 0: without connector plug, y = 1: with connector plugs (only possible with AL2812 and AL2815!)

Ordering information AL29xx-0000 magnet plate
AL2910-0000 magnetic assembly (lb = 192 mm, weight 10.5 kg/m), for AL28xx motors
AL2920-0000 magnetic assembly (lb = 288 mm, weight 10.5 kg/m), for AL28xx motors