Overview — Sprockets for Elevators & Lifts
Chain-driven elevators and goods lifts rely on sprockets that must never fail. From construction hoists on Sydney high-rises to warehouse goods lifts in Melbourne distribution centres, the drive sprocket is the critical link between the motor and the lifting chain that carries passengers, goods, and equipment vertically.
ایور پاور آسٹریلیا سپروکیٹس کمپنی لمیٹڈ تیار کرتی ہے۔ elevator-grade sprockets from premium alloy steel, carburised for surface hardness while maintaining a tough, shock-resistant core. Every sprocket is individually serialised, dimensionally verified on CMM, and ships with EN 10204 3.1 material certificates — meeting the stringent documentation requirements of AS 1735 and EN 81.
تکنیکی وضاحتیں
| پیرامیٹر | معیاری | حسب ضرورت |
|---|---|---|
| زنجیر کی پچ | 1″ – 3″ (25.4–76.2 mm) | Special pitch |
| دانت | 9 – 30 | Up to 50 |
| اسٹرینڈ | ڈوپلیکس / ٹرپلیکس | کواڈ / ہیکس |
| حب | Type C / Taper Lock / Keyed | Split / Weld-on |
| بور | 35 mm – 120 mm | 200 ملی میٹر تک |
| مواد | 42CrMo4 / 4140 | SS316 / Duplex SS |
| سختی | HRC 50–58 Carburised | HRC 62 nitrided |
| سطح | Zinc-Nickel / Phosphated | Geomet / Hard chrome |
| پی سی ڈی | 60 mm – 500 mm | 900 ملی میٹر تک |
| پروفائل | ISO 606 / ANSI B29.1 | Low-noise custom |
| زیادہ سے زیادہ RPM | 200 | 400 (balanced) |
| درجہ حرارت | –10 °C to +60 °C | –30 °C to +120 °C |
| کلیدی راستہ | دین 6885 | Double keyway / spline |
| بور رواداری | H6 | H5 |
| ٹی آئی آر | ≤ 0.03 mm | ≤ 0.01 mm |
| Safety Factor | ≥ 10:1 | ≥ 12:1 |
| تناؤ | ≥ 900 MPa | ≥ 1200 MPa |
| تھکاوٹ | ≥ 40,000 hrs | ≥ 60,000 hrs |
| Noise | ≤ 55 dB(A) | ≤ 48 dB(A) |
| پیکجنگ | Foam crate + VCI | Certified sealed unit |
Performance — Our Sprockets vs. Low-Cost Alternatives
| Feature | ایور پاور آسٹریلیا سپروکیٹس کمپنی لمیٹڈ | Budget Supplier |
|---|---|---|
| Safety Factor | ≥ 10:1 | 5–6:1 (unknown) |
| Traceability | Full — serial + heat no. + certs | None |
| دانتوں کی سختی | HRC 50–58 Carburised | HRC 28–35 (as-machined) |
| Expected Life | 40,000+ hrs | 8,000–12,000 hrs |
| Noise | ≤ 55 dB(A) | 70+ dB(A) |
How Sprockets Work in Elevators
In a chain-driven elevator (also called a “chain-drum” or “direct-drive” lift), a gearmotor turns a drive sprocket that engages a heavy-duty lifting chain. The chain connects directly to the elevator car (or to a counterweight arrangement). As the sprocket rotates, it winds or unwinds the chain, raising or lowering the car.
▸ Goods lifts / freight elevators: Often use ANSI 120–200 duplex or triplex chains with large-diameter, low-tooth-count sprockets for high torque at low speed.
▸ Construction hoists: Rack-and-pinion is common, but chain-driven models use sprockets on the drive mast to pull the cage upward.
▸ Car-park stackers: Chain-and-sprocket drives raise and lower vehicle platforms in automated parking systems.
مطابقت
| درخواست | سلسلہ کی اقسام | OEM Systems* |
|---|---|---|
| Goods Lift / Freight Elevator | ANSI 100–200, BS 16B–32B | Schindler, KONE, Otis |
| Construction Hoist | ANSI 120–160 Triplex | Alimak, GEDA, Maber |
| Car-Park Stacker | ANSI 80–120 Duplex | Klaus Multiparking, Wohr |
*Brand names for cross-referencing only. No affiliation with Ever-Power Australia Sprockets Co., Ltd..
✅ Elevator Sprocket Safety Compliance Checklist
☐ Material test certificate (EN 10204 3.1) with heat number
☐ Hardness test report (surface and core)
☐ Dimensional inspection report (bore, PCD, TIR, tooth profile)
☐ Safety factor calculation sheet (≥ 10:1 verified)
☐ Unique serial number laser-engraved
☐ Surface-treatment verification (coating thickness, adhesion test)
☐ Compliance declaration referencing AS 1735 / EN 81
☐ Packaging integrity for transit protection
☐ Installation torque specifications included
☐ Recommended maintenance schedule enclosed
We supply all of the above documentation as standard with every elevator sprocket order.
سلیکشن گائیڈ
- Determine lift type: goods, passenger, construction, stacker.
- Identify chain pitch, strand count, and working load limit (WLL).
- Measure shaft bore, keyway, and hub mounting space.
- Confirm required safety factor per local regulations (AS 1735, EN 81).
- Specify environment: indoor, outdoor, corrosive, temperature extremes.
Our engineers provide verified cross-references and compliance documentation. Enquire now.
تنصیب
- De-energise lift and apply LOTO per AS/NZS 4024 and AS 1735.
- Support the elevator car/counterweight with mechanical locks before releasing the chain.
- Disconnect chain and remove old sprocket from drive shaft.
- Inspect shaft, bearings, and gearbox output coupling. Replace worn components.
- Clean shaft, apply anti-seize, and mount new sprocket. Torque taper lock to spec.
- Verify sprocket alignment with laser tool; ≤ 0.2 mm offset.
- Reconnect chain with new master link rated to chain WLL.
- Set chain tension per OEM manual; check with the car at each floor level.
- Run lift through full travel 5 times at low speed; check chain tracking and noise.
- Perform load test per AS 1735; document results in lift logbook.
خرابی کا سراغ لگانا
Car levelling error at floor stops
وجہ: Chain stretch or sprocket tooth wear causing positional drift. درست کریں: Measure chain pitch; replace chain/sprocket if stretch > 1%.
Grinding noise during operation
وجہ: Sprocket misalignment or chain-guide contact. درست کریں: Re-align sprocket; adjust chain guides.
Chain slack accumulation
وجہ: Worn sprocket teeth not gripping chain properly. درست کریں: Replace sprocket; reset tensioner.
Motor overcurrent at start-up
وجہ: Sprocket bore seized on shaft or chain jam. درست کریں: Inspect bore for galling; lubricate; clear obstruction.
Vibration through building structure
وجہ: Unbalanced sprocket or worn shaft bearings. درست کریں: Replace with dynamically balanced sprocket; renew bearings.
کیس اسٹڈیز
📍 Sydney, NSW — High-Rise Construction Hoist
42-storey tower, twin construction hoists, ANSI 160 triplex chain. Previous sprockets lasted 8 months.
نتیجہ: Carburised 42CrMo4 13T triplex, safety factor 12:1. First replacement at 22 months. AUD 18,000 saved annually per hoist.
“Zero safety incidents since switching. These sprockets are built for the job.” — Site Mechanical Supervisor
📍 Melbourne, VIC — Car-Park Stacker
Automated 6-level car stacker, ANSI 100 duplex. Chain skip on descending cycle.
نتیجہ: Through-hardened 19T sprockets with H6 bore. Chain skip eliminated; stacker reliability improved to 99.7% uptime.
“Our customers no longer complain about stacker delays. Critical for tenant satisfaction.” — Property Manager
📍 Brisbane, QLD — Warehouse Goods Lift
3-tonne goods lift, ANSI 120 duplex, 200 cycles/day. Noise complaints from adjacent office.
نتیجہ: Noise-optimised sprockets reduced sound from 68 dB to 52 dB. Noise complaint resolved completely.
“The difference in noise level was immediate and significant.” — Warehouse Manager
📍 Adelaide, SA — Hospital Bed Lift
Chain-driven bed lift in 24/7 hospital environment. Zero tolerance for breakdown.
نتیجہ: Redundant-certified sprockets with 12:1 safety factor, full compliance docs. 36 months without unplanned stoppage.
“In a hospital, lift reliability is literally a matter of patient safety. These sprockets give us peace of mind.” — Hospital Facilities Director
📍 Perth, WA — Mining Shaft Hoist
Underground mine personnel hoist, extreme dust and humidity. Previous sprockets corroded within 4 months.
نتیجہ: Hard-chrome plated alloy-steel sprockets with sealed taper-lock hubs. First inspection at 14 months showed minimal wear.
“Finally a sprocket that survives our underground conditions.” — Mine Maintenance Engineer
اکثر پوچھے گئے سوالات
Do your lift sprockets carry safety certification?
All elevator/lift sprockets are manufactured to AS 1735, EN 81, and ISO 606 standards with full documentation.
Can you supply sprockets for legacy elevator systems?
Yes. We reverse-engineer sprockets for discontinued elevator models from samples or drawings.
What is your emergency supply capability?
Stock items ship within 48 hours. We maintain Australian safety stock for common elevator chain sizes.
Do you offer matched chain-and-sprocket sets?
Absolutely. We supply pre-matched kits for complete drive replacement.
How do I verify the safety factor of your sprocket?
We supply a calculation sheet with every elevator sprocket, showing material strength, tooth loading, and derived safety factor.
Can sprockets be supplied with split hubs?
Yes. Split sprockets allow shaft-in-place replacement, minimising lift downtime.
What corrosion protection suits underground or outdoor lifts?
Hard chrome, zinc-nickel, or Geomet coatings, depending on severity. Our engineers recommend the best option for your site.
Do you supply to lift maintenance companies?
Yes. We are an approved supplier to several national elevator service companies.
Can you supply custom tooth profiles?
Our CNC capabilities allow custom tooth geometry for noise reduction or specific chain compatibility.
What payment and credit terms are available?
T/T, L/C, and 30-day credit for approved accounts. ہم سے رابطہ کریں۔ for details.
Related — Transmission Chains
Complete your lift drive with our heavy-duty lifting chains — proof-tested to 2× WLL and supplied with test certificates.
سرٹیفیکیشنز
✅ ISO 9001:2015 | ✅ AS 1735 | ✅ EN 81 | ✅ ANSI B29.1 / ISO 606 | ✅ EN 10204 3.1 | ✅ RoHS | ✅ CE
ایور پاور آسٹریلیا سپروکیٹس کمپنی لمیٹڈ کیوں؟
Safety-critical applications are our speciality. With 20+ years manufacturing experience, a 25,000 m² facility with dedicated heat-treatment and inspection capabilities, and 50+ export markets, we understand the zero-failure standard that elevator applications demand. Australian warehouse stock, full OEM/ODM services, and expert engineering support.
Elevate Your Safety Standards — Contact Us
Every lift depends on its weakest component. Make sure your sprocket isn’t it.
From goods lifts to construction hoists, Ever-Power Australia Sprockets Co., Ltd. delivers the safety, quality, and compliance documentation your projects require.
