Sprockets for Elevators and Lifts — Chain-Driven Vertical Transport
Elevator and lift sprockets drive the chain mechanisms in freight lifts, car lifts, platform lifts, and chain-driven passenger elevators. As safety-critical vertical transport components, these sprockets must deliver fail-safe torque transmission with full material traceability. We supply elevator sprockets in 4140 alloy steel with precision bores, induction-hardened teeth, and EN 10204 Type 3.1 material certification to meet AS 1735 compliance requirements.
Specifications (20 Key Parameters)
| Tham số | Value | Phong tục |
|---|---|---|
| Sân bóng đá | 19.05–50.8mm | OEM specific |
| Xích | ANSI #60–#160 / ISO 12B–32B / Leaf chain | Đúng |
| Răng | 13–30T | 9–57T |
| Vật liệu | Thép hợp kim 4140 | C45 |
| Độ cứng | HRC 45–55 | — |
| TIR | ≤0.02mm | — |
| Khoan | H7 keyed | H6 |
| Hệ số an toàn | ≥8:1 (AS 1735) | — |
| Mệt mỏi | >15M cycles | — |
| Tốc độ | 0.1–1.0 m/s | — |
| Load | 500–10,000 kg SWL | Phong tục |
| Bề mặt | Oxit đen | Zinc, phosphate |
| Rãnh then | DIN 6885 | OEM |
| Trung tâm | B-Hub keyed | C-Hub, QD |
| Sợi | Nhà song lập/ba tầng | Simplex |
| Cân nặng | 5–35 kg | — |
| Nhiệt độ | -10°C to +60°C | — |
| Tiếng ồn | <65 dB | — |
| Standard | AS 1735 / EN 81 | — |
| Chứng chỉ | ISO 9001, EN 10204 3.1 | Full traceability |
Performance vs Inferior Sprockets
✅ 4140 alloy steel with verified composition — inferior sprockets use unknown steel grades that cannot pass safety audits.
✅ HRC 45–55 with controlled depth — cheap sprockets have inconsistent hardness creating fatigue risk.
✅ Full EN 10204 3.1 traceability — mandatory for AS 1735 lift compliance. No-brand imports cannot provide this.
How Sprockets Work in Elevators
In chain-driven lifts, the bánh răng truyền động is on the main gearbox output shaft at the top of the lift shaft. It engages heavy-duty roller chain or leaf chain connected to the lift car via a compensating mechanism. As the sprocket rotates, it raises or lowers the car. Counterweight sprockets on the opposite side balance the car weight. Địa điểm: Machine room (drive), car frame (compensating), counterweight frame. Chức năng: Vertical transport of car + payload at controlled speed with 8:1 minimum safety factor.
Lift Capacity vs Chain Selection
| Xích | Sợi | Approx SWL | Typical Application |
|---|---|---|---|
| #60 / 12B | Nhà song lập | Up to 1,000 kg | Platform lifts, car stackers |
| #80 / 16B | Nhà song lập | Up to 2,500 kg | Freight lifts, goods hoists |
| #100 / 20B | Nhà song lập | Up to 5,000 kg | Heavy freight, vehicle lifts |
| #120+ / 24B+ | Triplex | 5,000–10,000 kg | Heavy industrial, port |
Khả năng tương thích
Nhà sản xuất thiết bị gốc (OEM): Compatible with Otis*, Schindler*, KONE*, ThyssenKrupp*, Mitsubishi* lift chain drives.
*Compatibility reference only.
Selection / Installation
Lựa chọn: ❶ OEM model + year ❷ Sprocket drawing/dimensions ❸ Material (4140 for compliance) ❹ Confirm safety factor ≥8:1 ❺ Request EN 10204 3.1
Cài đặt: ❶ Isolate lift per AS 1735. LOTO. ❷ Support car on safety blocks. ❸ Remove chain tension + old sprocket. ❹ Install new sprocket, key, torque. ❺ Re-tension chain per OEM. ❻ Load test before service.
Khắc phục sự cố
| Vấn đề | Gây ra | Fix |
|---|---|---|
| Car jerking during travel | Worn teeth or chain pitch error | Inspect sprocket + chain. Replace if worn |
| Excessive chain noise | Dry chain or misalignment | Lubricate, re-align sprockets |
| Car levelling inaccuracy | Chain elongation from worn sprocket | Replace both, recalibrate levelling |
| Motor overload | Stiff chain or seized roller | Full chain path inspection |
| Vibration at machine room | Bore runout or coupling wear | Check TIR. Replace sprocket if >0.05mm |
Nghiên cứu trường hợp
Sydney, NSW — Warehouse Freight Lift: “4140 #80 duplex sprockets on our 3-tonne goods hoist. Full 3.1 certs. Running 2 years, passed all safety audits.” ★★★★★
Melbourne, VIC — Car Park Stacker: “#60 duplex on vehicle lift. Smooth operation, no jerking. Passed WorkSafe inspection.” ★★★★★
Brisbane, QLD — Hospital Service Lift: “Safety-critical application. Material traceability documentation was comprehensive and professional.” ★★★★☆
Perth, WA — Mining Supply Hoist: “#100 triplex for our 5-tonne parts hoist. 4140 steel with hardened teeth handling the heavy cycles well.” ★★★★★
Adelaide, SA — Winery Platform Lift: “SS304 sprockets on our stainless platform lift. Handles daily washdown without corrosion.” ★★★★★
Câu hỏi thường gặp
What safety factor for lift sprockets?
Can you match OEM lift sprocket specs?
Leaf chain sprockets?
Documentation for WorkSafe audit?
Số lượng đặt hàng tối thiểu?
Lift Chains
Tensioners
✅ ISO 9001 ✅ AS 1735 / EN 81 ✅ EN 10204 3.1 ✅ 4140 standard
Ever-Power Australia: 15+ years, ISO 9001, safety-critical capability, full material traceability.
