





B3S Linear Actuators
The B3S features a robust integrated and enclosed bearing design for the toughest environments
Tolomatic’s B3S is a linear screw driven rodless actuator series that has a enclosed carrier support bearing design that provides long life and high load capability. The bearings and screw are protected by a stainless steel dust band that provides a IP44 rating against dust and debris.
- 3 body sizes
- Maximum Load carrying capacity up to 8,032 lbf (3,642 kg)
- Stroke lengths up to 179 in (4.5m)
- Travel speeds up to 60 in/s (1.5 m/s)
- IP44 rating against dust and debris
- Auxiliary carrier and dual wraparound carrier options available for increased load capability
Features & Ordering
Download the B3S Brochure for full details on features
B3S Features
B3S Ordering
Specifications
| Specifications | Units | B3S10 | B3S15 | B3S20 |
|---|---|---|---|---|
| Maximum Stroke | in (mm) | 136 (3,454) | 133 (3,378) | 131 (3,337) |
| Maximum Force | lbf (N) | 170 (756) | 800 (3,559) | 2,700 (12,010) |
| Maximum Load | lbs (kg) | 591 (268) | 1,454 (660) | 2,008 (911) |
| Maximum Speed | in/sec (mm/sec) | 60 (1,524) | 60 (1,524) | 60 (1,524) |
B3S Screw Drive Specifications
B3S Specifications
| B3S SIZE | MAX STROKE | SCREW TYPE | SCREW LEAD | MAX THRUST | LEAD ACCURACY | BACKLASH | SCREW DIAMETER | BASE ACTUATOR INERTIA | BASE ACTUATOR INERTIA | INERTIA PER in OF STROKE | MAXIMUM DYNAMIC FRICTION TORQUE |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LMI | RP | ||||||||||
| in | turns/in | lbf | in/ft | in | in | lb-in2 | lb-in2 | lb-in2 | lb-in | ||
| 10 | 64.2 | BN(L)08 | 8.00 | 130 | 0.0040 | 0.015 | 0.375 | 0.003 | 0.004 | 0.0005 | 1.1 |
| 136.2 | SN05 | 5.00 | 170 | 0.0060 | 0.007 | 0.500 | 0.011 | 0.014 | 0.0017 | 1.3 | |
| 134.2 | SN02 | 2.00 | 170 | 0.0050 | 0.007 | 0.500 | 0.016 | 0.019 | 0.0017 | 1.8 | |
| 134.2 | SNA02 | 2.00 | 170 | 0.0050 | 0.003 | 0.500 | 0.019 | 0.022 | 0.0017 | 1.8 | |
| 100.2 | SN01 | 1.00 | 170 | 0.0060 | 0.007 | 0.500 | 0.032 | 0.035 | 0.0017 | 2.5 | |
| 15 | 61.4 | BN(L)02 | 2.00 | 800 | 0.0030 | 0.015 | 0.500 | 0.025 | 0.028 | 0.0017 | 1.6 |
| 61.4 | BN(L)05 | 5.00 | 800 | 0.0030 | 0.015 | 0.625 | 0.040 | 0.047 | 0.0042 | 1.3 | |
| 133.4 | SN02 | 2.00 | 200 | 0.0050 | 0.007 | 0.625 | 0.048 | 0.055 | 0.0042 | 1.9 | |
| 133.4 | SNA02 | 2.00 | 200 | 0.0050 | 0.003 | 0.625 | 0.048 | 0.055 | 0.0042 | 1.9 | |
| 133.4 | SN01 | 1.00 | 300 | 0.0050 | 0.007 | 0.750 | 0.119 | 0.133 | 0.0087 | 2.8 | |
| 20 | 131.4 | BN(L)02 | 2.00 | 2,700 | 0.0040 | 0.015 | 0.750 | 0.116 | 0.122 | 0.0087 | 3.1 |
| 131.4 | BN(L)05 | 5.00 | 950 | 0.0030 | 0.015 | 0.750 | 0.105 | 0.111 | 0.0087 | 2.2 |
(L) for low backlash ball screws: backlash = 0.0020”
| B3S SIZE | MAX STROKE | SCREW TYPE | SCREW LEAD | MAX THRUST | LEAD ACCURACY | BACKLASH | SCREW DIAMETER | BASE ACTUATOR INERTIA | BASE ACTUATOR INERTIA | INERTIA PER in OF STROKE | MAXIMUM DYNAMIC FRICTION TORQUE |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LMI | RP | ||||||||||
| mm | mm/rev | N | mm/300mm | mm | mm | kg-cm2 | kg-cm2 | kg-cm2 | Nm | ||
| 10 | 1,630 | BNM10 | 10.00 | 1,832 | 0.10 | 0.06 | 10.0 | 0.010 | 0.012 | 0.0001 | 0.13 |
| 15 | 3,388 | BNM05 | 5.00 | 7,300 | 0.05 | 0.05 | 16.0 | 0.047 | 0.055 | 0.0005 | 0.27 |
| 20 | 3,337 | BNM05 | 5.00 | 11,700 | 0.05 | 0.06 | 20.0 | 0.322 | 0.342 | 0.0011 | 0.25 |
Dimensions
B3S10 Actuator & Options Dimensions
B3S15 Actuator & Options Dimensions
B3S20 Actuator & Options Dimensions
B3S10 Dual 180º Option Dimensions
B3S15 Dual 180º Option Dimensions
B3S20 Dual 180º Option Dimensions
Get CAD
Manuals & Part Sheets
Additional Resources
Information Center:
English
Chinese
German
Spanish
Application Checklists
Case Studies
Catalogs & Brochures
- Corporate Overview-Linear Motion Solutions Brochure (English)
- SOLUCIONES DE CONTROL DE MOVIMIENTO (Spanish, Corporate Overview-Motion Control Solutions Brochure)
- Unternehmensübersicht (German, Corporate Overview brochure)
- Brochure sur l'entreprise Tolomatic (French, Corporate Overview-Linear Motion Solutions Brochure)
- B3S/B3W Electric Rodless Actuators Catalog
- Aplicaciounes de la Ind. Automotriz (Auto Appl SP)
- Gantry & Multi-Axis Solutions Brochure
- Soluciones Gantry y Multieje (^ES Gantry brochure)
- Medical and Life Sciences brochure
- OEM Actuator Solutions Brochure
Certifications
Guides
- Selecting the Optimal Screw Technology
- Actuator Life: How to estimate for ball and roller screw actuators
- INFOGRAPHIC: Accuracy and Repeatability in Linear Actuators
- INFOGRAPHIC: Ten Tips for Specifying Rodless Electric Linear Actuators
- INFOGRAPHIC: Calculating Total Cost of Ownership
- 如何选择 螺杆? 甄选 正确的技术 (Chinese, How to select the right lead screw for an electric actuator)
- Abschnitt: Welches Gewinde? Die richtige Technologie auswählen (German - Which Screw)
- Guide to Third Party Motor Integration
- Switch Reference Guide
Tech Bulletins
Terms & Conditions
White Papers
- Electric actuators vs. pneumatic cylinders: A comparison based on total cost of ownership
- The truth about actuator life: Screw drive survival
- Select the right linear actuator: Making sense of manufacturer specifications
- Specifying electric rodless actuators: Ten tips for maximizing actuator life and system performance
- Rules of actuator and guide alignment in linear motion systems
- IP ratings and the manufacturing environment: How to apply linear actuators for quality, safety and long service life.
- Minimizing electrical noise in actuator drive systems for maximum reliability and performance
- Screw-driven vs. belt-driven rodless actuators: How to select drive trains for reliability, efficiency and long service life
- Introduction to accuracy and repeatability in linear motion systems
- Elektrische Stangenantriebe vs. Hydraulikzylinder: Ein Vergleich der Vor- und Nachteile beider Technologien weißes Papier (Electric vs Hydraulic WP, German)
- Designing Gantry and Multi-Axis Automation Systems

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