How Much Force Does It Take to Start Sliding a MUTO Door System?
One of the greatest strengths of the dormakaba MUTO sliding door system is its effortless operation. Whether your project is commercial or residential, understanding the starting force required—not just ongoing motion—is critical for both code compliance and end-user satisfaction.
Smooth, ADA-Compliant Operation by Design
MUTO systems are engineered to satisfy the Americans with Disabilities Act (ADA), which sets a maximum allowable opening force of 5 lbs for manual sliding doors in accessible spaces. Whether your system uses glass, wood, or aluminum panels (when paired with the MUTO Adapter Kit), users can expect consistently easy opening and sliding, so everyone can operate these doors with confidence.
How Is Sliding Force Measured?
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ADA compliance applies to the maximum force required to move the door once it is in free motion.
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If your MUTO is equipped with the DORMOTION soft-close feature, there will be a slightly higher breakaway force at the point of disengaging the soft-close latch, but once in motion, the door glides smoothly and remains within ADA guidelines.
Technical Specifications Table
| Model | Max Glass Panel Weight | Max Wood Panel Weight | Min Panel Width | Max Panel Width | Max Door Height | ADA Compliant Sliding Force | DORMOTION Option |
|---|---|---|---|---|---|---|---|
| XL 150/XL 150 DM | 150 kg (330 lbs) | 150 kg (330 lbs) | 660 mm (26 in) | 1448 mm (57 in) | 3000 mm (118 in) | Yes | Standard/Option |
| XL 80 DM | 80 kg (176 lbs) | 80 kg (176 lbs) | 660 mm (26 in) | 1448 mm (57 in) | 3000 mm (118 in) | Yes | Standard/Option |
| XL 120 SC | 120 kg (264 lbs) | 120 kg (264 lbs) | 850 mm (33 in) | 1448 mm (57 in) | 3000 mm (118 in) | Yes | Standard |
| L 80 DM | 80 kg (176 lbs) | 80 kg (176 lbs) | 660 mm (26 in) | 1448 mm (57 in) | 3000 mm (118 in) | Yes | Standard/Option |
Panel Sizing Chart (Excerpt)
| System Model | Glass Thickness | Door Height | Min/Max Panel Width | Max Panel Weight |
|---|---|---|---|---|
| MUTO XL 150 | 8–13.5 mm (5/16–9/16 in) | up to 3 m (118 in) | 660–1448 mm (26–57 in) | 150 kg (330 lbs) |
| MUTO XL 80 | 8–13.5 mm (5/16–9/16 in) | up to 3 m (118 in) | 660–1448 mm (26–57 in) | 80 kg (176 lbs) |
| MUTO XL 120 SC | 8–13.5 mm (5/16–9/16 in) | up to 3 m (118 in) | 850–1448 mm (33–57 in) | 120 kg (264 lbs) |
What Factors Affect the Starting Force?
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Panel Weight & Size: MUTO is purpose-built for panels up to 150 kg (330 lbs), yet still operates smoothly due to advanced roller and track design.
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DORMOTION Mechanism: Engaging the soft-close function briefly increases initial resistance, but once released, the sliding force reduces to well under 5 lbs.
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Correct Installation: Proper track levelling, roller alignment, and panel sizing per dormakaba specifications ensures consistent low-force operation.
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Handle Placement: For most ergonomic access, handles are best at 2-1/2 inches (64 mm) from the leading edge of the door.
FAQs: Force & Ease of Use with MUTO Sliding Doors
Q1: Is MUTO easy for all users to open?
Yes—when installed per specifications, MUTO’s sliding force is ADA compliant and comfortable for users of all abilities.
Q2: Does DORMOTION affect the force?
There’s a momentary extra resistance when disengaging DORMOTION, but afterward, sliding is exceptionally smooth and light.
Q3: Does panel type or the Adapter Kit change force requirements?
No—the Adapter Kit for wood or aluminum doors is designed so that the sliding force remains consistent with glass models.
Q4: Any maintenance tips for easiest operation?
Regularly clean tracks/rollers and check for alignment to keep your system gliding smoothly.
Expert Tips for Installers
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Double-check measurements with the provided sizing charts to guarantee the door stays within the weight and size specifications for your chosen MUTO model.
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Fine-tune installation adjustments—even minor misalignments can slightly impact operating force.
Conclusion
With the MUTO system, you’re guaranteed a sliding door experience that’s both ADA compliant and a delight to use, even for heavier glass or wood panels with soft-closing features. By following the technical guidelines, every door will deliver effortless, reliable operation—day in and day out.
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