Get an overview of the specification differences between the TKB, B3W and MXB belt drive actuators

1. A Comparison of Tolomatic belt drive actuators
MXB-U Electric Belt Drive MXB-P Electric Belt Drive B3W Electric Belt Drive TKB Electric Belt Drive
For complete information see www.tolomatic.com or literature number:
8500-4000 8500-4000 3600-4148 3600-4609
• High linear velocity
• High acceleration rates
• Long stroke lengths • Longer stroke length than
screw drive actuators
• Excellent repeatability
• High duty cycles
• Low profile • Lowest profile
• Requires external guidance
and support • High load and bending moment capacities • Superior rigidity, high moment
loads
• High precision bearings
feature smooth, low breakaway motion
• Straightness and flatness
within 0.0002 inches per inch
of stroke
• Durable profiled rail design
uses THK® Caged Ball®
technology to reduce friction
and extend actuator life
• Wide stable platform for XY
applications
• Lowest carrier deflection of
any Tolomatic actuator
Detailed comparisons of Tolomatic belt drive actuators
MXB : TKB : B3W page 2 & 3 MXB : B3W page 4

2. Comparison of Tolomatic belt
drive actuators
maximum thrust comparison
400
300
THRUST (lbf)
200
B3W20
100 500
0
2000
1500
1000
0
TKB10
Bending moment comparison
6000
4000
2000
800
600
400
200
100
80
60
40
TKB75
MXB32
B3W15
TKB50
TKB Electric Belt Drive
(See #3600-4609 for complete
information)
Motor Mounting
The MXB is unique among Tolomatic belt drive actua-tors.
SDT SDB
C
22 11..880000..332288..22117744
THRUST (N)
MXB16
TKB25
B3W10
B3W15
TKB50
TKB75
MXB25 MXB32 MXB40 MXB50 MXB63
MX MOMENT ON CARRIER (in-lb)
MX MOMENT ON CARRIER (N-m)
20
600
400
200
80
60
40
20
1000
100
10
8
6
4
2
10
MXB16
TKB10
TKB25
B3W10
B3W15
B3W20
TKB50
MXB25 MXB32 MXB40 MXB50 MXB63
MX
The MXB
electric actuator
is exactly what you
expect from the indus-try’s
number one rodless sup-plier.
Designed with our exclu-sive
ENDURANCE TECHNOLOGYSM
features, the MX delivers superior per-formance
to meet the most demanding
applications. The MXB broadens the choices
for belt drive actuators providing Tolomatic reliabili-ty
in applications that were not available before. Nobody
knows rodless like Tolomatic, and the MX proves it.
Use these graphs for a quick reference comparing the
performance features of the MXB to the Tolomatic B3W
and TKB. For complete information about the B3W or the
TKB visit our web site or check out the B3W brochure and
the Electric products catalog.
A
C
C
A
B (SQUARE)
DIRECT DRIVE
BOTTOM
mounting surface
for load shown UP
DIRECT DRIVE TOP
mounting surface for
load shown UP
MXB-P
SDB
MXB-P
SDT
LEFT RIGHT
A
C
A
B (SQUARE)
B (SQUARE)
B (SQUARE)
DIRECT DRIVE
BOTTOM
mounting surface
for load shown UP
DIRECT DRIVE TOP
mounting surface for
load shown UP
DIRECT DRIVE RIGHT
mounting plate for guided load shown UP
DIRECT
DRIVE
LEFT
mounting plate
for guided load
shown UP
MXB-U
SDR
MXB-U
SDL
MXB-P
SDB
MXB-P
SDT
B3W Electric Belt Drive
(See #3600-4148 for complete
information)
The mounting surface of the carrier is located 90°
from the motion of the belt. The side opposite the belt is
reserved for switch placement. The bottom of the actua-tor
is reserved for mounting. If the motor is mounted in the
SDT direct drive top orientation be sure the load mounted
to the carrier does not interfere with the motor.
maximum speed comparison
MXB 150 in/sec
TKB 100 in/sec
B3W 200 in/sec
Mount load here
Mounting surface of
actuators shown UP
B3W15
TKB50

3. inertia comparison inertia per unit of stroke comparison
REFLECTED INERTIA (kg-cm2/cm)
0.0025 0.0050 0.0075 0.0100 0.0125
MXB63 0.0216 lb-in2/in
MXB50
B3W15
maximum load Fy & FZ comparison
2000
1500
1000
500
0
B3W20Fz
8000
7000
6000
5000
4000
3000
2000
1000
0
FORCE ON CARRIER (lbf)
FORCE ON CARRIER (N)
TKB10
TKB25
MXB16
B3W10Fz
B3W10Fy
B3W15Fz
B3W15Fy
B3W20Fy
TKB50
TKB75
MXB25 MXB32 MXB40 MXB50 MXB63
6000
4000
2000
1000
800
600
400
200
100
80
60
40
600
400
200
100
10
8
6
TKB10
B3W20
2.5 5.0 7.5 10.0 12.5 15.0
10.1930 lb-in2
B3W10
TKB10
TKB25
TKB50
B3W15
B3W20
TKB75
0 1 2 3 4 5 6
6000
4000
2000
1000
800
600
400
200
100
80
60
40
600
400
200
100
10
8
6
REFLECTED INERTIA (kg-cm2)
REFLECTED INERTIA (lb-in2)
Noo.. 88550000--44000011__0000 33
300
200
0
7000
6000
5000
4000
3000
2000
1000
100
0
STROKE (in)
STROKE (mm)
MXB16
TKB10 25
B3W10
B3W15
B3W20
50 75
MXB25 MXB32 MXB40 MXB50 MXB63
MZ MOMENT ON CARRIER (in-lb)
MZ MOMENT ON CARRIER (N-m)
20
10
80
60
40
20
4
2
MXB16
TKB25
B3W10
B3W15
TKB50 TKB75
MXB25 MXB32 MXB40 MXB50 MXB63
MY MOMENT ON CARRIER (in-lb)
MY MOMENT ON CARRIER (N-m)
20
10
80
60
40
20
4
2
MXB16
TKB10
TKB25
B3W10
B3W15
B3W20
TKB50
TKB75
MXB25 MXB32 MXB40 MXB50 MXB63
Bending moment comparison
maximum Stroke length comparison
MY MZ
MXB63
MXB50
MXB40
MXB32
MXB25
MXB16
REFLECTED INERTIA (lb-in2/in)
0
0.0005
0.0010
0.0015
0.0020
0.0025
0.0030
0.0035
0.0040
0.0045
0.0050
0.0055
0.0060
0.0065
0.0070
0.0075
0.0080
0.0085
0.0090
0.0095
0.0100
0.0105
0.0110
0.0115
0.0120
0.0125
MXB40
MXB32
MXB25
MXB16
TKB10
TKB25
B3W10
B3W20
TKB50
TKB75

4. B3W
COMPARISON OF MXB AND B3W
The MXB and the B3W have many similarities, yet each have
unique capabilities that suit different applications.
Note the actuators that use the same belt and pulley:
MXB25 = B3W10 MXB40 = B3W15 MXB50 = B3W20
This results in the same thrust.
MXB-P
FEATURE MXB25 B3W10 MXB40 B3W15 MXB50 B3W20
Belt Width (in) 0.71 1.18 1.57
Pulley Dia (in) 1.003 1.504 1.754
Stroke per Rev (in) 3.151 4.725 5.501
Thrust (lbf) 150 250 325
Breakaway Torque (lb-in) 5.00 9.38 10.00 12.50 15.00 28.13
Max Stroke (in) 200 207 200 204 160 108
Dead Length (in) 12.34 12.46 16.12 16.54 16.92 17.00
**L = maximum distance between support plates (see lit. #3600-4609 or www.tolomatic.com)
3800 County Road 116, Hamel, MN 55340
http://www.Tolomatic.com • Email: Help@Tolomatic.com
Phone: (763) 478-8000 • Fax: (763) 478-8080 • Toll Free: 1-800-328-2174
Information furnished is believed to be accurate
and reliable. However, Tolomatic assumes no
responsibility for its use or for any errors that
may appear in this document. Tolomatic reserves
the right to change the design or operation of the
equipment described herein and any associated
motion products without notice. Information in this
document is subject to change without notice.
LOAD
Fy (lbf) 449 341 736 840 1014 1159
Fz (lbf) 449 591 736 1454 1014 2008
MOMENT
Mx (in-lbs) 126 250 600 859 811 1662
My (in-lbs) 502 269 1913 1033 3483 1472
Mz (in-lbs) 502 156 1913 596 3483 850
SPED *MXB-P (200 in/sec for MXB-U)
Max Velocity (in/sec) 150* 200 150* 200 150* 200
Max Acceleration (in/sec2) 1,200 1,200 1,200 1,200 1,200 1,200
WEIGHT
Base Unit (zero stroke) (lb) 4.36 7.54 14.07 25.12 20.84 35.40
per inch of Stroke (lb/in) 0.195 0.389 0.537 0.395 0.749 0.716
INERTIA
Pulleys (lb-in2) 0.0259 0.0259 0.3719 0.3719 0.7243 0.7243
Carrier (lb-in2) 0.9914 0.1041 2.9693 0.5089 5.7498 0.9728
per inch of Stroke (lb-in2) 0.0017 0.0016 0.0065 0.0017 0.0117 0.0114
Repeatability (in) +/- .002 +/- .002 +/- .002 +/- .002 +/- .002 +/- .002
Straightness, Flatness (in) .00067 L** .00067 L** .00067 L** .00067 L** .00067 L** .00067 L**
IP Rating — 44 — 44 — 44
Temp Range (°F) 10-130 40-130 10-130 40-130 10-130 40-130
Available Mounting Surfaces 1 3 1 3 1 3
Available Slots for Switches 1 2 1 2 1 2
Price at 48" Stroke
(as % of B3W20 price) 50% 69% 68% 79% 86% 100%
©2009 Tolomatic 200901270959 Literature Number: 8500-4001_00