Description
Otis Elevator Brakes DAA330K1/K5 Brief Introduction
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Product Name |
Otis Elevator Brakes |
| Model Number |
DAA330K1/K5 |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Otis Elevator Brakes DAA330K1/K5 – Silent, Safe Stopping for High-Speed Otis Cars | Nanjing Zhuye Elevator Parts
Every elevator ride ends with one critical moment: the brake must grip, hold and never slip. The Otis DAA330K1 (standard) and DAA330K5 (heavy-duty) spring-applied, electromagnetically-released brakes are that final guardian. Rated 2 000 N static torque, they secure car and counter-weight on steel or coated flat belts in Gen2® and 4200 gearless machines up to 4 m/s and 1 350 kg. When power is lost, springs clamp the friction faces within 0.3 s; when 48 V DC returns, a precision coil lifts the armature with < 55 dB click—quieter than a library whisper. When the brake drags or the coil burns, the car overshoots, overheats or refuses to start. Nanjing Zhuye Elevator Parts keeps genuine DAA330K1/K5 brakes complete with hub, key, shims and torque-stripe paint—ready for next-day despatch worldwide—helping you restore absolute stopping power without costly OEM delays.
Product snapshot
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Otis part numbers DAA330K1 (standard) and DAA330K5 (heavy-duty)
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2 000 N ±5 % static torque, 1 500 N dynamic braking, fits 10-16 mm belt thickness
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48 V DC coil, 20 °C resistance 18 Ω, inrush 2.6 A, holding 1.0 A, power 48 W
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Twin 0.5 mm friction liners, organic non-asbestos, CoF 0.38, rated −40 °C to +250 °C
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Aluminium armature, e-coat anti-corrosion, hub bore 40 mm with 12 mm keyway
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Manual release lever with lock-in-place position for rescue operations
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IP42 cover as standard, optional IP54 cast cover for outdoor MRL shafts
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3 million cycle design life, UL & CE certified, RoHS compliant
Where it works
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Gen2® Life, Gen2® Switch, Gen2® Flex with MX10-MX50 permanent-magnet machines
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4200/5200 high-speed gearless up to 4 m/s, 1 350 kg rating
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Modernisation packages replacing obsolete DAA329 or drum brakes on OH5000 machines
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Any controller expecting SIL-3 brake feedback and < 0.5 mm air-gap monitoring
Installation method – 30-minute field swap
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Place lift on inspection mode; raise car until brake is accessible from car top.
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Switch OFF main breaker and 48 V brake supply; lock & tag.
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Insert manual release lever, compress brake and lock in released position.
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Remove circlip and hub bolts; slide old brake away from belt.
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Clean shaft end; check for scoring or corrosion—dress lightly with 400 grit if needed.
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Fit new DAA330K1/K5 with supplied key; torque hub bolts to 50 Nm in star pattern.
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Measure air gap: 0.25-0.40 mm on both sides; add or remove shims (0.1 mm increments) to achieve equal gap.
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Connect 48 V coil leads, polarity insensitive; torque M4 screws to 1.2 Nm.
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Release manual lever; brake must clamp belt firmly with no slip.
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Power up; verify coil current 1.0 A and brake-lift LED on car-top box.
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Run 20 full-speed cycles; verify temperature < 65 °C on cover.
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Apply torque-stripe paint; log serial number and gap value in maintenance book.
Replacement cycle & preventive maintenance
Otis bulletin SB-BRK-2024-03 recommends:
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Visual inspection every 6 months: check for oil contamination, uneven liner wear, hub bolt torque-stripe.
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Air-gap measurement: replace when gap > 0.7 mm (liner worn to 2 mm remaining) or when adjustment screws bottom out.
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Torque test: static holding test 1 250 N·m on car at 125 % rated load; any slip demands immediate replacement.
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Replace entire brake every 5 years or 3 million cycles in high-duty applications (hospital, metro).
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Immediate replacement if:
– coil resistance < 16 Ω (shorted turns) or > 20 Ω (burnt winding),
– manual release lever will not lock (spring fatigue),
– friction liner cracked or delaminated > 10 mm length,
– brake fails to lift < 46 V (lift-standard requirement).
Pro tip: 60 % of premature failures are traced to loose hub bolts—re-torque to 50 Nm every year.
Maintenance tips from Nanjing Zhuye Elevator Parts
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Always use copper paste on hub-bar joints; galvanic corrosion between copper and aluminium raises resistance and overheats traces.
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Never run the lift with battery disconnected; the brake relies on battery damping to suppress voltage spikes.
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Keep a spare DAA330K1/K5 in every high-rise service room; at 3.2 kg it fits in a backpack and saves a night call.
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After lightning storm, check PFC choke for cracks; surge current can fracture the ferrite core.
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Order the “Brake Bundle” (brake + shims + key + lever) from Nanjing Zhuye Elevator Parts to eliminate parts hunting and ensure matched components.
Why buy from Nanjing Zhuye Elevator Parts?
We are an Otis-authorised distributor, importing DAA330K1/K5 directly from the Czech factory, balancing every rotor and testing brake lift-off at 48 V. Units are shipped with a 24-month replacement warranty. Our 3 000 m² Nanjing warehouse keeps 300+ brakes in stock; orders placed before 15:00 China time leave the same evening via DHL Express, arriving Europe or North America in 2–4 days. Bulk pricing starts at five pieces; we can pre-set gap values and include a loaner brake to keep your lifts braking during the swap.
Conclusion
The DAA330K1/K5 brake is the silent sentinel that stops every Otis lift exactly where it should. By installing the genuine unit, setting the air-gap to specification and replacing it before liners glaze, you ensure every landing is level, every stop is silent, and every passenger steps out with confidence. Stock genuine DAA330K1/K5 from Nanjing Zhuye Elevator Parts today—because when the brake stops, the lift stops.
