BLMX Series Linear Motor

Description

Design Features

  • 49% greater continuous output force in the same physical envelope than competitive models
  • Continuous force to 1063 N (239 lb); peak force to 4252 N (956 lb)
  • 152.0 mm high x 50.8 mm wide cross section
  • Special magnet options available for increased force output
  • Follows the 2011/65/EU RoHS 2 Directive

The BLMX series "U-channel" brushless linear servomotors offer over 49% greater continuous output force in the same physical envelope than similar models from other manufacturers.

BLMX series motors feature a high-efficiency magnetic circuit design that provides continuous force ratings to 1063 N (239 lb) and peak forces to 4252 N (956 lb). This extremely high level of performance can be enhanced with special high-strength magnet options that increase force output.

The BLMX forcer assembly contains Hall-effect devices, and a thermal sensor, and is constructed of reinforced ceramic epoxy. This ironless design eliminates eddy-current losses that otherwise would limit speed and produce additional heat.

BLMX linear motors are direct drive and consist of a forcer and "U-channel" rare-earth magnet track. This design eliminates backlash, windup, wear and maintenance issues associated with ball screws, belts, and rack and pinions.

The BLMX series nonmagnetic forcer eliminates cogging and magnetic attraction to allow for extremely smooth motion and very tight velocity and position control. These linear motors are ideal for applications demanding the ultimate in force output. BLMX series linear motors are forgiving to align, easy to assemble, and keep the magnetic field well-contained. Magnet tracks are stackable for any travel length. These motors are well-suited for industrial applications.

The BLMX can be driven using standard Aerotech brushless amplifiers and controllers to provide a complete, integrated system.

Need help sizing your motor? Try Aerotech's Motor Sizer software to specify the ideal motor for your application.

Specifications

BLMX Series Specifications

Motor ModelUnitsBLMX-382BLMX-502
Performance Specifications(1,5)
Continuous Force, 1.4 bar, 20 psi(2) N (lb) 972 (218) A B (opt)
1063 (239) 1011 (227)
Continuous Force,
No Forced Cooling(2)
N (lb) 537 (121) 601 (135)
Peak Force(3) N (lb) 3887 (874) 4252 (956)
Electrical Specifications(5)
Winding Designation   A B (opt) A B (opt)
BEMF Constant (Line-Line, Max) V/(m/s)
(V/(in/s))
86.26
(2.19)
172.52
(4.38)
109.59
(2.78)
54.79
(1.39)
Continuous Current, 1.4 bar, 20 psi(2) Apk
Arms
12.95
9.16
6.48
4.58
11.15
7.88
21.21
15.00
Continuous Current,
No Forced Cooling(2)
Apk
Arms
7.15
5.06
3.58
2.53
6.30
4.45
12.60
8.91
Peak Current, Stall(3) Apk
Arms
51.80
36.63
25.90
18.31
44.60
31.54
89.20
63.08
Force Constant, Sine Drive(4,8) N/Apk
(lb/Apk)
75.04
(16.87)
150.09
(33.74)
95.33
(21.43)
47.67
(10.72)
N/Arms (lb/Arms) 106.13 (23.86) 212.25 (47.72) 134.82 (30.31) 67.41
(15.16)
Motor Constant(2,4) N/√W (lb/√W) 39.72 (8.93) 46.23 (10.39)
Resistance, 25°C (Line-Line) Ω 3.4 13.6 4.5 1.1
Inductance (Line-Line) mH 3.0 12.0 4.0 1.0
Thermal Resistance, 1.4 bar, 20 psi °C/W 0.12 0.12
Thermal Resistance, No Forced Cooling °C/W 0.40 0.39
Maximum Bus Voltage VDC 340 340
Mechanical Specifications
Air Flow, 20 psi m3/s
(SCFM)
5.4x10-3
(11.5)
5.6x10-3
(11.8)
Coil Weight kg (lb) 3.40 (7.48) 4.45 (9.79)
Coil Length mm (in) 382.0 (15.04) 502.0 (19.76)
Heat Sink mm (in) 250x400x25
(10x16x1)
250x500x25
(10x20x1)
Magnet Track Weight kg/m (lb/ft) 35.8 (24.01)
Magnetic Pole Pitch mm (in) 30.00 (1.18) 30.00 (1.18)
Standards   2011/65/EU RoHS 2 Directive
  1. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.
  2. Values shown @ 65°C rise above a 25°C ambient temperature, with motor mounted to the specified aluminum heat sink.
  3. Peak force assumes correct rms current; consult Aerotech.
  4. Force constant and motor constant specified at stall.
  5. All performance and electrical specifications ±10%.
  6. Maximum winding temperature is 90°C.
  7. Ambient operating temperature range 0°C - 25°C. Consult Aerotech for performance in elevated ambient temperatures.
  8. All Aerotech amplifiers are rated Apk; use force constant in N/Apk when sizing.

Dimensions

  • BLMX

Ordering Information

Ordering Example

BLMX-502-A -AC -NH -S -750 MTX480

Options

Series Air CoolingHall EffectPreparationCable LengthMagnet Track
BLMX-382-A
BLMX-502-A
BLMX-x-x
-AC
-NC
-H
-NH
-S
-V
-UHV
-750
-5000
MTX480
MTX600
MTXx

BLMX Brushless Linear Servomotor

Option Description
BLMX-382 Linear motor forcer with hall effect sensors and thermistor, includes air fitting, 972 N (218 lb) continuous force at 20 psi
BLMX-502 Linear motor forcer with hall effect sensors and thermistor, includes air fitting, 1063 N (239 lb) continuous force at 20 psi
BLMX-x-x Linear motor forcer with hall effect sensors and thermistor, includes air fitting

Winding

Option Description
-A 76 cm (2.5 ft) flying leads std
-B Optional winding

Air Cooling

Option Description
-AC Includes air cooling fitting
-NC No air cooling fitting is installed

Hall Effect

Option Description
-H Hall effect sensors included
-NH No hall effect sensors

Preparation

Option Description
-S Standard preparation
-V Vacuum preparation for 10-6 Torr
-UHV Ultra-high vacuum preparation, contact factory

Cable Length

Option Description
-750 750 mm high-flex cable
-5000 5.0 meter high-flex cable

Magnet Tracks

Option Description
MTX480-HS "U" channel magnet track for use with BLMX-series forcers, 480 mm (18.9 in) length
MTX600-HS "U" channel magnet track for use with BLMX-series forcers, 600 mm (23.6 in) length
MTX720-HS "U" channel magnet track for use with BLMX-series forcers, 720 mm (28.3in) length
MTXx Custom "U" channel magnet track for use with BLMX-series forcers