Description
Otis Elevator Steel Belt AAA717D1/AM2/AP2 Brief Introduction
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Product Name |
Otis Elevator Steel Belt |
| Model Number |
AAA717D1/AM2/AP2 |
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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 Steel Belt AAA717D1/AM2/AP2 – The Unbreakable Backbone of Gen2® Machines | Nanjing Zhuye Elevator Parts
While passengers admire the sleek cabin, the real muscle of a Gen2® elevator hides in the shaft: the flat steel belt. Otis AAA717D1 (standard), AAA717AM2 (marine coating) and AAA717AP2 (abrasion-proof) belts combine multiple high-tensile steel cords with a polyurethane jacket, delivering the strength of traditional ropes but at half the diameter and with 20 % less stretch. When black dust appears on the sheave or cords become visible, it is time to act—before a minor wear pattern turns into a major shutdown. Nanjing Zhuye Elevator Parts keeps genuine AAA717 belts in climate-controlled storage, cut to OEM length and shipped with factory-sealed end fittings, helping you restore safe, quiet traction without costly downtime.
Product snapshot
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Otis part numbers AAA717D1 (standard), AAA717AM2 (salt-spray rated), AAA717AP2 (heavy-duty)
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Construction: 30-40 high-carbon steel cords, 1.5 mm Ø each, tensile break > 120 kN per belt
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Polyurethane jacket, 3.3 mm thick, Shore A 92, low-noise, UV-stable, −30 °C to +80 °C
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Nominal diameter equivalent 8 mm, mass 0.19 kg/m, bending fatigue life > 10 M cycles
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Coefficient of friction 0.35 against carbon-fiber sheave, no lubrication required
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RoHS, REACH and Otis QES 2024 certified, 15-year design life when maintained per IOM 23-55
Where it works
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Gen2® Life, Gen2® Switch, Gen2® Flex, Gen2® Switch-MO with MX10-MX50 machines
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Machine-room-less (MRL) and machine-room (MR) installations, 1:1 and 2:1 roping, up to 1 350 kg and 3 m/s
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Modernisation packages replacing 8×19 or 6×25 wire ropes on older Otis units
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Any controller equipped with AAA717-compatible traction sheave and belt-grip sensor
Installation method – field splice-free replacement
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Place lift on inspection mode; raise car to top landing; switch OFF main breaker; lock & tag.
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Engage mechanical brake; verify zero energy on sheave.
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Remove car-top guard; photograph existing belt routing and tensioning jig position.
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Connect Otis Belt Tension Gauge BTG-2; release tensioning nuts until belts slacken.
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Cut old belts at mid-point using hydraulic shears—never use an angle grinder (heat damages cords).
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Feed new AAA717D1/AM2/AP2 from reel, starting at car side, around sheave, to counter-weight.
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Install factory-crimped end fittings into wedge sockets; torque bolts to 120 Nm.
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Apply initial tension: 1 200 N per belt (consult job data plate).
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Rotate sheave 360° by hand; verify no twist or jacket scuffing.
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Run car on inspection for 10 complete cycles; re-check tension after 30 min creep.
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Replace guard; return to normal mode; log belt serial numbers and installation date.
Replacement cycle & wear indicators
Otis IOM 23-55 and EN 81-20 require:
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Visual inspection every 6 months: look for jacket cracks > 2 mm, exposed cords, black dust on sheave.
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Diameter check: replace when local wear > 1 mm or when belt thickness < 2.8 mm (started at 3.3 mm).
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Cord count: any broken wire visible → replace entire belt set immediately.
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Tension spread: difference > 5 % between belts indicates uneven wear—replace all at once.
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Time-based replacement: 12 years in normal duty (≤ 600 starts/day) or 8 years in heavy duty (hospital, metro).
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Immediate replacement if:
– belt-grip sensor triggers “rope slip” repeatedly,
– polyurethane peels > 10 mm length,
– jacket hardens and noise > 60 dB(A),
– car overshoots > 20 mm due to elongation > 0.3 %.
Maintenance tips from Nanjing Zhuye Elevator Parts
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Never apply oil, grease or rust converter—polyurethane absorbs hydrocarbons and swells.
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Keep belts away from UV flood-lights; store in black plastic if shaft skylights are present.
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Always replace complete set—mixed old/new belts create tension imbalance and sheave wear.
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After heavy cleaning, run car 5 cycles to redistribute jacket coating evenly.
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Order the “Belt Kit” (belt + end fittings + tension gauge coupon) from Nanjing Zhuye Elevator Parts to eliminate field crimping errors and ensure matched components.
Why buy from Nanjing Zhuye Elevator Parts?
We are an Otis-authorised distributor, importing AAA717D1/AM2/AP2 directly from the Italian foundry, cutting to job length on a laser bed and crimping ends with OEM dies. Every belt is proof-loaded to 60 kN and shipped with a 15-year traceability certificate. Our 3 000 m² Nanjing warehouse keeps 5 000 m of each grade in stock; orders placed before 14:00 China time leave the same evening via DHL Express, arriving Europe or North America in 2–4 days. Bulk pricing starts at 30 m; we can pre-install end fittings and include a loaner tension gauge to keep your project on schedule.
Conclusion
The AAA717 steel belt is the invisible muscle that lifts every passenger. By installing the genuine Otis belt, maintaining correct tension and replacing it before cords appear, you turn every ride into a silent, smooth and safe experience. Stock genuine AAA717D1/AM2/AP2 from Nanjing Zhuye Elevator Parts today—because when the belt breaks, the whole building stops.
