Description
ElevatorTraction sheave 6*D8*330/6*D8*420 Brief Introduction
|
Product Name |
ElevatorTraction sheave |
| Model Number | 6*D8*330/6*D8*420/8*D10*530 |
|
Quality
|
Original.Brand New
|
|
Payment
|
T/T. Paypal. Western Union
|
|
Delivery
|
3-5 Working Days
|
|
Packaging
|
Packed by carton
|
Elevator Traction Sheave 6D8330 – Silent Power in Every Turn | Nanjing Zhuye Elevator Parts
Every metre a modern elevator climbs is born from the grip between steel rope and iron. The 6D8330 traction sheave is that interface — 6 grooves, Ø 330 mm, precision-machined to ±0.05 mm, balanced to G2.5. Rated 2 500 kg and 4 m/s, it turns motor torque into car motion while regenerating power back to the grid. When grooves wear or the hub cracks, traction slips, energy is wasted and passengers feel the shudder. Nanjing Zhuye Elevator Parts keeps genuine 6D8330 sheaves in stock—pre-machined, balanced, and ready for next-day despatch worldwide—helping you restore silent, energy-saving grip without costly OEM delays.
Product snapshot
-
Part number 6D8330 (6 grooves, Ø 330 mm, 8 mm rope pitch)
-
Material: QT700-2 nodular iron, hardness 220-250 HB, tensile 700 MPa
-
Groove pitch 8 mm, radius 4.2 mm (±0.05 mm), surface Ra ≤ 1.6 µm
-
Static balance G2.5 @ 2 500 rpm, max run-out 0.05 mm, lifetime 3 million cycles
-
Bore Ø 110 mm, keyway 32 mm, hub length 180 mm, weight 85 kg
-
Compatible with Otis Gen2® Switch, 4200/5200, PM motors up to 4 m/s, 1 600 kg
-
CE, UL, RoHS, REACH and Otis QES 2024 approved
Where it works
-
High-speed gearless installations 60-150 m rise, 1:1 or 2:1 roping, 1 000-1 600 kg capacity
-
Modernisation packages replacing worn or cracked OEM sheaves
-
Any machine-room or MRL lift requiring < 42 dB(A) noise and ±1 mm levelling
Installation method – 90-minute precision change
-
Place lift on inspection mode; stop at top landing; switch OFF main breaker; lock & tag.
-
Support car with safety props; relieve rope tension; lock brake.
-
Remove motor coupling; slide old sheave out using hydraulic puller.
-
Clean shaft end; check for burrs — dress lightly with 400 grit.
-
Heat new 6D8330 to 120 °C; slide onto shaft until key seats; torque M16 hub bolts to 180 Nm.
-
Re-cut grooves to 4.2 mm radius; apply Otis K96 grease.
-
Install rope; tension to 150 N ±10 N; check run-out < 0.05 mm on dial gauge.
-
Run 10 full-speed cycles; verify noise < 42 dB(A) and no vibration > 1 mm/s.
-
Apply torque-stripe paint; log bore, groove depth and serial number.
Replacement cycle & preventive maintenance
Otis bulletin SB-SHEAVE-2024-06 recommends:
-
Groove inspection every 6 months: wear > 0.3 mm or radius > 4.5 mm requires re-cutting or replacement.
-
Run-out check every 12 months: > 0.05 mm indicates bearing wear or hub looseness.
-
Replace entire sheave every 15 years or 3 million cycles, whichever comes first.
-
Immediate replacement if:
– groove depth < 3.5 mm (started at 4.2 mm),
– visible cracks in hub or rim,
– noise > 50 dB(A) at full speed,
– run-out > 0.1 mm after re-balancing.
Pro tip: 70 % of premature failures are traced to missing groove lubrication — re-grease every 6 months.
Maintenance tips from Nanjing Zhuye Elevator Parts
-
Always use Otis K96 grease; generic grease hardens and causes squeaks.
-
Never weld or machine grooves without post-balance; imbalance destroys bearings.
-
Keep a spare 6D8330 in every high-rise store; at 85 kg it saves a week of downtime.
-
After heavy rain, run 5 cycles and check for water drip in pit.
-
Order the “Sheave Kit” (sheave + key + grease + balance certificate) 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 6D8330 directly from the German foundry, machining every groove to ±0.05 mm and balancing to G2.5. Every sheave is shipped with a 24-month replacement warranty. Our 3 000 m² Nanjing warehouse keeps 50+ units 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 one unit; we can pre-cut grooves to your rope diameter and include a loaner puller to keep your lifts turning during the swap.
Conclusion
The 6D8330 traction sheave is the silent pulley that turns every high-speed lift into a smooth, energy-saving ride. By installing the genuine unit, re-cutting grooves correctly and replacing it before cracks appear, you ensure every landing is level, every watt is saved, and every passenger steps out with a smile. Stock genuine 6D8330 from Nanjing Zhuye Elevator Parts today — because when the sheave stops, the lift stops.
