Description
Otis Door Motor F.FBA24350AM Brief Introduction
|
Product Name |
Otis Door Motor |
| Model Number |
F.FBA24350AM |
|
Quality
|
Original.Brand New
|
|
Payment
|
T/T. Paypal. Western Union
|
|
Delivery
|
3-5 Working Days
|
|
Packaging
|
Packed by carton
|
Otis Door Motor F.FBA24350AM – Compact Torque for Silent, Swift Door Motion | Nanjing Zhuye Elevator Parts
Every passenger judges an elevator by its doors. The Otis F.FBA24350AM brushless PM motor delivers the torque behind that first impression: 0.35 Nm continuous, peaks to 1.2 Nm, yet spins at only 55 dB—quieter than a library whisper. Built into Gen2® Life, Gen2® Switch and 4200 cars, it mates with VVVF4+/VF5+ operator boxes to open a 1,000 mm panel in < 2.5 s while keeping closing force under 150 N. When the motor stalls or encoder drift appears, the car feels old and unsafe. Nanjing Zhuye Elevator Parts keeps genuine F.FBA24350AM motors—complete with encoder, key and mounting gasket—in stock for next-day despatch worldwide, helping you restore premium door motion without costly OEM delays.
Product snapshot
-
Otis part number 713FBA24350-AM, revision E3, firmware matched to DO-15.6
-
24 V DC, 0.35 Nm continuous, 1.2 Nm peak, 3 000 rpm, 55 dB(A) at 1 m
-
Three-phase brushless PM rotor, Hall sensors + 1 024 ppr incremental encoder
-
Aluminium housing, e-coat anti-corrosion, IP54, −10 °C to +55 °C
-
Shaft Ø 14 mm, length 30 mm, key 5 × 5 × 20 mm, front flange B14, 4 × M6 on 63 mm PCD
-
Mass 1.1 kg, length 105 mm, diameter 60 mm, through-panel or side-mount
-
50 000 h bearing life, 10 million cycle design, CE, UL, RoHS certified
Where it works
-
Gen2® Life, Gen2® Switch, Gen2® Flex with VVVF4+ (side) or VF5+ (centre) operator boxes
-
4200/5200 modernisation packages replacing old 400 V AC induction motors
-
Any door panel 600-1 200 mm wide, 80-130 kg mass, belt or chain transmission
Installation method – 20-minute field swap
-
Place lift on inspection mode; open doors manually; switch OFF local breaker; lock & tag.
-
Remove operator cover; photograph encoder and power connectors.
-
Release belt tensioner; slide belt off motor pulley.
-
Remove four M6 flange bolts; pull motor straight out (avoid encoder damage).
-
Clean mounting face; apply new gasket (supplied).
-
Insert new F.FBA24350AM; torque bolts to 8 Nm in diagonal pattern.
-
Re-install key, pulley, belt; tension to 3 % of belt length (deflection 6 mm at 200 mm span).
-
Connect encoder (8-pin) and 24 V power (2-pin); verify Hall sequence LED blinks once per revolution.
-
Power up; run auto-learn via Otis Door Tool; 90 s cycle learns inertia, friction, encoder offset.
-
Execute 50 continuous cycles; verify temperature < 45 °C on motor flange and no fault codes.
-
Apply torque-stripe paint; log serial number and date in maintenance book.
Replacement cycle & preventive maintenance Otis bulletin SB-DO-2024-05 recommends:
-
Visual inspection every 6 months: check for oil on encoder, loose key, bearing noise.
-
Encoder test: oscilloscope trace must show clean 0-5 V square wave; replace motor if jitter > 10 %.
-
Bearing test: rotate by hand; roughness or axial play > 0.1 mm means bearing failure—replace immediately.
-
Replace entire motor every 10 years or 3 million cycles, whichever comes first.
-
Immediate replacement if:
– motor stalls with < 0.2 Nm torque (magnet demagnetisation),
– encoder Hall error persists after cable swap,
– temperature > 70 °C on flange (fan failure),
– shaft seal leaks grease onto encoder disk.
Pro tip: 60 % of premature failures are traced to over-tensioned belts—keep deflection within 3 %.
Maintenance tips from Nanjing Zhuye Elevator Parts
-
Always use the supplied key; loose keys ovalise the shaft and destroy the encoder disk.
-
Never pressure-wash the motor; water enters the bearing and locks the encoder.
-
Keep a spare F.FBA24350AM in every service van; at 1.1 kg it costs less than one callback.
-
After heavy cleaning, run 5 cycles to redistribute grease inside bearings.
-
Order the “Motor Kit” (motor + key + gasket + encoder plug) 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 F.FBA24350AM directly from the Czech factory, balancing every rotor and testing encoder signals at 3 000 rpm. Motors are shipped with a 24-month replacement warranty. Our 3 000 m² Nanjing warehouse holds 300+ units year-round; 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 laser-mark your asset number and preload the encoder hub to cut on-site fitting time in half.
Conclusion The F.FBA24350AM door motor is the silent muscle behind every perfect door movement. By installing the genuine Otis unit, maintaining correct belt tension and replacing it before bearings growl, you ensure every passenger enters and exits smoothly—without even noticing the technology at work. Stock genuine F.FBA24350AM from Nanjing Zhuye Elevator Parts today—because when the motor stops, the whole ride stops.
