描述
EP-NRV-E090 — Shaft-Input Aluminium Worm Gearbox with Tail Output Shaft
Technical Specifications — EP-NRV-E090
| 范围 | 价值 |
|---|---|
| 系列 | NRV-E (Solid Shaft Input, No Flange, Worm-Direction Tail Output Shaft) |
| 中心距离 | 090 mm |
| 缩减率 | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| 额定输入功率 | Up to 5.5 kW |
| 输出速度范围 | 转速范围：14 至 280 转/分（输入转速 1400 转/分） |
| 最大输出扭矩 | 7,306 N·m |
| 输入配置 | Solid shaft input (no IEC flange) + worm-direction tail output shaft |
| Input Shaft | Solid keyed shaft input |
| 尾部输出轴 | 蜗杆方向（与蜗杆轴同轴，位于另一端） |
| 房屋材料 | 压铸铝合金 |
| 蜗轮材料 | 磷青铜 |
| 蜗杆轴材料 | 20CrMnTi合金钢，表面硬化，精密研磨 |
| 输出孔径 | 35 mm H7 with keyway |
| 润滑 | ISO VG 220 齿轮油（出厂灌装） |
| 安装位置 | B3、B6、B7、B8、V5、V6 |
| 保护等级 | IP54 |
| 环境温度 | -10°C 至 +40°C |
NRV-E090 Performance Table (5.5 kW / 1400 r/min)
| 比率（i） | 输出转速（转/分钟） | 输出扭矩（牛·米） | 服务系数（fs） |
|---|---|---|---|
| 7.5 | 187 | 2,785 | 1.9 |
| 10 | 140 | 3,065 | 1.5 |
| 15 | 93 | 3,882 | 1.2 |
| 20 | 70 | 4,273 | 1.1 |
| 25 | 56 | 4,603 | 1.1 |
| 30 | 47 | 4,891 | 1.2 |
| 40 | 35 | 5,383 | 1.5 |
| 50 | 28 | 5,799 | 1.4 |
| 60 | 23 | 6,163 | 1.2 |
| 80 | 18 | 6,783 | 1.1 |
| 100 | 14 | 7,306 | 0.9 |
✅ 核心功能和独特优势
🔗蜗杆导向尾部输出轴——关键区别因素
The defining feature of the NRV-E090 is its additional tail output shaft that extends in the same direction as the worm shaft axis. This second output enables simultaneous drive of two independent loads from a single gearbox — a primary application drive via the main output bore and a secondary auxiliary drive (encoder, tachometer, small pump, or fan) via the tail shaft.
🍲 Mine-Safe Chain Drive + Safety Interlock
The NRV-E090 is purpose-built for instrumented mining conveyor chain drives where the solid shaft input handles engine or hydraulic motor chain pull and the tail shaft provides safety PLC rotation interlock signals.
◯ Same Torque as Standard NRV090
The NRV-E090 delivers identical maximum output torque (7,306 N·m) to the standard NRV090, confirming that the tail shaft adds zero performance penalty on the main output. The tail shaft is driven directly off the worm shaft end, not the output stage.
编码器和反馈就绪
尾部输出轴为旋转编码器、测速发电机和脉冲发生器提供了直接连接点，这些设备用于在闭环运动控制系统中监测蜗杆轴的速度，从而无需外部编码器支架和联轴器硬件。
🚫 IP54 — 双重密封完整性
主输出孔和尾轴出口均采用双接触唇形密封件密封，在所有安装方向上均保持 IP54 防护等级，且在任何轴接口处均无漏油现象。
🏭 应用场景
💧 Sludge Thickener Rotation Monitoring
Heavy industrial NMRV-E090 worm gearbox for municipal sludge thickeners where the tail shaft provides continuous rotation confirmation to the SCADA system, alerting operators instantly to rake stall events.
⚙ Chemical Reactor Feedback Drive
High-torque worm gear reducer with tail output shaft for chemical reactor agitator drives where the tail shaft encoder monitors worm shaft speed and feeds back to a process control system.
🍲 Mining Conveyor Instrumentation
Aluminium worm gearbox with tail shaft for underground mining conveyor take-up drives where the tail-mounted tachometer provides belt-speed data to the mine-wide monitoring and safety system.
📥 Port Conveyor Supervision
Corrosion-resistant worm gearmotor with tail shaft for port bulk material conveyor drives where the tail shaft speed signal confirms conveyor motion to the port operations control room.
🔎 选择指南
Worked Example — Mine Safety Interlock
Required: NRV-E090 at i=60, chain-driven from 5.5 kW engine at 1400 r/min, tail shaft to mine safety PLC. Output speed = 23 r/min, torque = 6,163 N·m. Tail shaft: safety encoder, 35 mm bore. ✅ NRV-E090-60 selected.
⚖ NRV-E090 vs Standard NRV090
| 特征 | EP-NRV-E090 (with Tail Shaft) | EP-NRV090 (Standard) |
|---|---|---|
| 尾部输出轴 | ✅ 是的——蠕虫方向 | 不 |
| 编码器/反馈安装 | 直接安装在尾轴上 | 需要外置支架 |
| 双负载驱动器 | 是的——主线+尾线 | 不——仅单输出 |
| 主输出扭矩 | 7,306 N·m | 7,306 N·m |
| 住房尺寸 | 稍长（尾轴突出部分） | 标准长度 |
| Shaft Input | Yes — solid keyed shaft | Yes — solid keyed shaft |
NRV-E090 Main Output Shaft Dimensions
| G1（毫米） | K1（毫米） | L/DZ（毫米） | L1/SZ（毫米） | b2（毫米） | d h6 (mm) | 键槽 |
|---|---|---|---|---|---|---|
| 140 | 154 | 234 | 309 | 10 | 35 | M12 |
❓ 常见问题解答
What is the tail output shaft on the EP-NRV-E090 and how is it different from the main output?
The tail shaft on the NRV-E090 exits the housing in the worm-direction axis (opposite end of the worm shaft), while the main output bore is perpendicular (90 degrees) to the worm axis. The tail shaft is driven off the worm shaft end and is used for encoder mounting, tachometer connection, or light auxiliary drive, while the main output delivers the full 7,306 N·m load torque.
Does the tail shaft reduce the main output torque of the NRV-E090?
No. The tail shaft draws only the small torque needed for its connected device. The main output retains the full 7,306 N·m rating, identical to the standard NRV090.
What is the input shaft specification for the NRV-E090?
The NRV-E090 has a solid keyed input shaft (no IEC flange). The shaft diameter matches the equivalent NMRV090 bore input diameter. It accepts chain sprockets, belt pulleys, and rigid couplings. A bilateral (double-ended) input shaft is standard; single-end configuration available on request.
What encoder types can be mounted on the NRV-E090 tail shaft?
Any standard keyed rotary encoder with the matching bore diameter can be mounted on the NRV-E090 tail shaft: incremental (5V–24V, 100–10,000 PPR), SSI absolute, or resolver-type. Confirm the encoder bore size and keyway before ordering. The tail shaft key dimensions match the catalogue DZ shaft specification for NMRV-E090.
Can the NRV-E090 be used for closed-loop speed control in a chain-driven system?
Yes. The NRV-E090 is the ideal solution for chain-driven systems requiring closed-loop speed feedback. The chain drives the solid input shaft; the main output drives the load; and the tail shaft mounts an encoder that feeds speed/position data back to the controller. This eliminates the need for a separate encoder mounting bracket or a second independent encoder drive arrangement.
⭐ 用户评价
★★★★★
“Our underground mine conveyor NRV-E090 units have tail-shaft rotation sensors integrated into our mine safety PLC. The sensors provide emergency-stop interlock signals when belt motion is lost. Exactly the safety integration we needed for underground compliance.”
Steve K. — Mining Engineer, Coal Mine 🇦🇺 Australia (NSW)
★★★★★
“The NRV-E090 drives our wastewater sludge scraper chain mechanism and the tail shaft pulse counter integrates into our SCADA for remote monitoring. Three years of continuous operation in hydrogen-sulphide atmosphere without corrosion or seal issues.”
Anita R. — Plant Manager, Water Authority 🇮🇿 New Zealand
★★★★☆
“We chain-drive NRV-E090 units on our quarry aggregate conveyor and use the tail-shaft tachometers for belt speed monitoring in our conveyor control system. The belt management system has reduced conveyor-related stoppages by 35% since installation.”
Rob C. — Operations Director, Aggregate Quarry 🇫🇯 Finland
⚙ 配件及兼容产品
⚡ IEC电机（B5/B14）
标准交流电机，配有匹配的IEC法兰。另有VFD变频器版本，可实现变速控制。
🔗 输出轴套件
单端实心（DZ）、双端（SZ）、输出法兰（F）、空心法兰（FL）——所有 H7/h6 公差，带标准键槽。
🔨扭力臂和支架
用于轴安装配置的钢制扭矩反作用臂；用于 B3/B6 方向的底座安装板。
🔒密封和呼吸套件
更换唇形密封件套件、通气塞和磁性放油塞，延长保养周期。
Request a Quote for EP-NRV-E090
Our engineering team will confirm the input shaft, ratio, and safety encoder specification for your chain-driven mining or industrial instrumented drive.
这 EP-NRV-E090 aluminium worm gearbox combines a solid shaft input (no IEC flange) with an additional worm-direction tail output shaft. Centre distance 090 mm, ratios 5 to 100, input power up to 5.5 kW, max output torque 7,306 N·m. The tail shaft enables simultaneous encoder feedback, safety interlock monitoring, or auxiliary drive — the ideal instrumented shaft-input worm gearbox for chain-driven closed-loop agricultural, industrial, and mining drive systems.
