BLMUC Series Linear Motor

Description

Design Features

  • Ultra-compact size for tight space constraints; 52.0 mm x 20.8 mm cross section
  • Continuous force to 58.0 N (13.0 lb); peak force to 231.8 N (52.1 lb)
  • Non-magnetic forcer provides high force with zero cogging for super-smooth velocity and position control
  • Ideal for pick-and-place machines where Z-axis space is limited
  • Follows the 2011/65/EU RoHS 2 Directive

The BLMUC linear motor is an ultra-compact “U-channel” motor measuring only 52.0 mm x 20.8 mm in cross section, designed to provide high force in an ultra-compact package. The BLMUC is ideally suited for small load applications with tight space constraints such as a pick head on a pick-and-place machine, and low-mass, high-acceleration material handling machines.

The motor consists of a noncontact forcer assembly with Hall-effect devices, thermal sensor, and “U-channel” magnet track. This design eliminates backlash, windup, wear and maintenance issues associated with ball screws, belts, and rack and pinions.

The forcer assembly is a compact, reinforced ceramic epoxy structure. The ironless design eliminates cogging and eddy-current losses that otherwise would limit speed and produce additional heat. To produce the highest rms force, air cooling is standard.

These linear motors are ideal for any application that requires high levels of positioning resolution and accuracy. BLMUC 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. They are also suited for cleanroom use as they produce no particulates.

The BLMUC 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

BLMUC Series Specifications

Motor ModelUnitsBLMUC-79BLMUC-95BLMUC-111BLMUC-143
Performance Specifications(1,2)
Continuous Force 1.4 bar (20 psi)(3) N (lb) 31.4 (7.0) 40.5 (9.1) 46.9 (10.5) 58.0 (13.0)
Continuous Force,
No Forced Cooling(3)
N (lb) 18.3 (4.1) 23.0 (5.2) 30.6 (6.9) 39.8 (9.0)
Peak Force(4) N (lb) 125.4 (28.2) 161.9 (36.4) 187.6 (42.2) 231.8 (52.1)
Electrical Specifications(2)
Winding Designation   -A -A -A -A
BEMF Constant
(Line-Line, Max)
V/(m/s)
(V/(in/s))
6.80 (0.17) 9.00 (0.23) 11.35 (0.29) 15.90 (0.40)
Continuous Current, 1.4 bar
(20 psi)(3)
Apk
Arms
5.30
3.75
5.17
3.66
4.75
3.36
4.19
2.96
Continuous Current,
No Forced Cooling(3)
Apk
Arms
3.10
2.19
2.94
2.08
3.10
2.19
2.88
2.04
Peak Current, Stall(4) Apk
Arms
21.20
14.99
20.68
14.62
19.00
13.44
16.76
11.85
Force Constant,
Sine Drive(5,6)
N/Apk (lb/Apk) 5.92 (1.33) 7.83 (1.76) 9.87 (2.22) 13.83 (3.11)
N/Arms (lb/Arms) 8.37 (1.88) 11.07 (2.49) 13.96 (3.14) 19.56 (4.40)
Motor Constant(3,5) N/√W (lb/√W) 2.89 (0.65) 3.35 (0.75) 3.78 (0.85) 4.53 (1.02)
Resistance, 25°C (Line-Line) Ω 4.0 5.2 6.5 8.9
Inductance (Line-Line) mH 0.51 0.70 0.87 1.10
Thermal Resistance 1.4 bar (20 psi) °C/W 0.85 0.69 0.65 0.61
Thermal Resistance,
No Forced Cooling
°C/W 2.48 2.12 1.52 1.29
Maximum Bus Voltage VDC 340
Mechanical Specifications
Air Flow (20 psi) m3/s
(SCFM)
1.5x10-3
(3.12)
1.5x10-3
(3.15)
1.5x10-3
(3.22)
1.5x10-3
(3.12)
Coil Weight kg (lb) 0.10 (0.22) 0.12 (0.26) 0.14 (0.31) 0.20 (0.44)
Coil Length mm (in) 80.0 (3.15) 96.0 (3.78) 112.0 (4.41) 144.0 (5.61)
Heat Sink mm (in) 250x250x25 (10x10x1) 250x250x25 (10x10x1) 250x250x25 (10x10x1) 250x250x25 (10x10x1)
Magnet Track Weight kg/m (lb/ft) 3.33 (2.23)
Magnetic Pole Pitch mm (in) 16.00 (0.63) 16.00 (0.63) 16.00 (0.63) 16.00 (0.63)
Standards   2011/65/EU RoHS 2 Directive
  1. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.
  2. All performance and electrical specifications ±10%.
  3. Values shown @ 100°C rise above a 25°C ambient temperature, with motor mounted to the specified aluminum heat sink.
  4. Peak force assumes correct rms current; consult Aerotech.
  5. Force constant and motor constant specified at stall.
  6. All Aerotech amplifiers are rated Apk; use force constant in N/Apk when sizing.
  7. Maximum winding temperature is 125°C.
  8. Ambient operating temperature range 0°C - 25°C. Consult Aerotech for performance in elevated ambient temperatures.

Dimensions

  • BLMUC Series

Ordering Information

Ordering Example

BLMUC-79-A -AC -NH -S -750 MTUC96

Ordering Options

Series Air CoolingHall EffectPreparationCable LengthMagnet Track
BLMUC-79-A
BLMUC-95-A
BLMUC-111-A
BLMUC-143-A
BLMUC-x-x
-AC
-NC
-H
-NH
-S
-V
-UHV
-750
-5000
MTUC96
MTUC128
MTUC160
MTUC192
MTUC224
MTUC256
MTUC288
MTUC352
MTUC416
MTUCx

BLMUC Brushless Linear Servomotor

Option Description
BLMUC-79 Linear motor forcer with hall effect sensors and thermistor, 18.3 N (4.1 lb) continuous force with no cooling
BLMUC-95 Linear motor forcer with hall effect sensors and thermistor, 23 N (5.2 lb) continuous force with no cooling
BLMUC-111 Linear motor forcer with hall effect sensors and thermistor, 30.6 N (6.9 lb) continuous force with no cooling
BLMUC-143 Linear motor forcer with hall effect sensors and thermistor, 39.8 N (9 lb) continuous force with no cooling
BLMUC-X-X Linear motor forcer with hall effect sensors and thermistor

Winding

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

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 m high-flex cable

Magnet Tracks

Option Description
MTUC96 "U" channel magnet track for use with BLMUC-series forcers, 96 mm (3.8 in) length
MTUC128 "U" channel magnet track for use with BLMUC-series forcers, 128 mm (5.0 in) length
MTUC160 "U" channel magnet track for use with BLMUC-series forcers, 160 mm (6.3 in) length
MTUC192 "U" channel magnet track for use with BLMUC-series forcers, 192 mm (7.6 in) length
MTUC224 "U" channel magnet track, for use with BLMUC-series forcers, 224 mm (8.8 in) length
MTUC256 "U" channel magnet track for use with BLMUC-series forcers, 256 mm (10.1 in) length
MTUC288 "U" channel magnet track for use with BLMUC-series forcers, 288 mm (11.3 in) length
MTUC352 "U" channel magnet track for use with BLMUC-series forcers, 352 mm (13.9 in) length
MTUC416 "U" channel magnet track for use with BLMUC-series forcers, 416 mm (16.4 in) length
MTUCx Custom "U" channel magnet track for use with BLMUC-series forcers