Request Quote
Request a quote from Nidec Drive Technology America Corporation.
EJH 030 Frame
The EJH is an ideal fit for machine builders transitioning from mechanical or hydraulic systems to all-electric servo drives. Unlike traditional worm gearhead out on the market, the EJH utilizes a globoidal gear mesh, resulting in 300% shock load capacity and a quiet, smooth-running drive.
With torque capability up to 7800 in. lb. and backlash as low as 6 arc-min, the EJH is well suited for metals, plastics or rubber processing machinery applications requiring a robust, compact solution. NIDEC DTC can customize this product to fit your needs by offering a variety of solid shaft, hollow shaft or shrink disc output mounting options.
Technical Data
EJH 030 Frame Size, 1 Stage Specifications
| Ratio | Unit | Note | 5 | 6 | 7 | 8 | 9 | 10 | 15 | 20 | 25 | 30 | 40 | 50 | 60 |
| Nominal Output Torque | [Nm] | – | 196 | 219 | 233 | 248 | 255 | 264 | 275 | 272 | 272 | 260 | 248 | 239 | 230 |
| Maximum Acceleration Torque | [Nm] | – | 275 | 306 | 324 | 345 | 355 | 367 | 381 | 373 | 373 | 357 | 341 | 328 | 315 |
| Emergency Stop Torque | [Nm] | – | 1,311 | 1,424 | 1,480 | 1,548 | 1,548 | 1,559 | 1,570 | 1,503 | 1,435 | 1,390 | 1,254 | 1,096 | 1,085 |
| No Load Running Torque | [Nm] | *1 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 | 3.46 |
| Nominal Input Speed | [rpm] | – | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 |
| Max Continuous Input Speed | [rpm] | – | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| Maximum Cyclic Input Speed | [rpm] | – | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 |
| Maximum Radial Load | [N] | *2 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 | 11,110 |
| Maximum Axial Load | [N] | *3 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 | 4,220 |
| Moment of Inertia (≤ Ø19) | [kgcm2] | – | 13.3 | 11.1 | 9.80 | 8.94 | 8.35 | 7.92 | 6.92 | 6.57 | 6.41 | 6.32 | 6.24 | 6.19 | 6.17 |
| Moment of Inertia (≤ Ø28) | [kgcm2] | – | 16.2 | 14.0 | 12.7 | 11.8 | 11.2 | 10.8 | 9.78 | 9.43 | 9.27 | 9.18 | 9.10 | 9.05 | 9.03 |
| Moment of Inertia (≤ Ø38) | [kgcm2] | – | 19.9 | 17.7 | 16.3 | 15.5 | 14.9 | 14.5 | 13.5 | 13.1 | 13.0 | 12.9 | 12.8 | 12.7 | 12.7 |
| Efficiency | [%] | *4 | 92 | 92 | 91 | 91 | 90 | 89 | 88 | 85 | 84 | 90 | 76 | 73 | 70 |
| Torsional Rigidity | [Nm/arcmin] | – | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 | 41.6 |
| Max Torsional Backlash (Standard) | [Arc-min] | – | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 |
| Max Torsional Backlash (Low) | [Arc-min] | – | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 | ≤ 7 |
| Noise Level | dB [A] | *5 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 | ≤ 80 |
| Ambient Temperature | [°C] | – | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 | -25~100 |
| Permitted Housing Temperature | [°C] | – | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Protection Class | – | – | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 |
| Lubrication | – | – | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil | Synthetic Oil |
| Service Life | [Hours] | – | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 | 25,000 |
| Weight | [kg] | *6 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 |
- Torque at no load applied to the input shaft at 2,000 rpm
- The maximum radial load the gearbox can accept
- The maximum axial load the gearbox can accept
- The efficiency at the nominal output torque rating
- Measured with no load applied to the input shaft at 2,000 rpm
- Weight may vary slightly between models
EJH 030 Dimensions – Hollow Output Shaft
| Frame Size | Unit | Note | EJH 030 |
| L1 | [mm] | – | 21.5 |
| L2 | [mm] | – | 3.5 |
| L3 | [mm] | – | 65 |
| L4 | [mm] | – | 78.5 |
| L5 | [mm] | – | 200 |
| L6 | [mm] | – | 49 |
| L7 | [mm] | – | 81 |
| L8 | [mm] | – | 230 |
| L9 | [mm] | – | 92 |
| L10 | [mm] | – | 138 |
| L11 | [mm] | – | 76.2 |
| L12 | [mm] | – | 115 |
| L13 | [mm] | *1 | 156 – 168 |
| L14 | [mm} | – | 98 |
| L15 | [mm] | – | 49 |
| L16 | [mm] | – | 14 |
| D1 ±0.03 | [mm] | – | Ø 135.69 |
| D2 | [mm] | – | Ø 155.5 |
| D3 (h7) | [mm] | – | Ø 45 |
| T1 | [mm] | – | 4xM12X18 |
| T2 | [mm] | – | 6XM10 Bolts |
| V1~V9 | [mm] | *2 | Motor attachment dimensions are made to fit your servo motor. |
EJH 030 Dimensions – Solid Output Shaft
| Frame Size | Unit | Note | EJH 030 |
| L1 | [mm] | – | 50 |
| L2 | [mm] | – | 3 |
| L3 | [mm] | – | 85.5 |
| L4 | [mm] | – | 65 |
| L5 | [mm] | – | 84 |
| L6 | [mm] | – | 168.5 |
| L7 | [mm] | – | 252.5 |
| L8 | [mm] | – | 49 |
| L9 | [mm] | – | 81 |
| L10 | [mm] | – | 230 |
| L11 | [mm] | – | 92 |
| L12 | [mm] | – | 138 |
| L13 | [mm] | – | 76.2 |
| L14 | [mm} | – | 115 |
| L15 | [mm] | *1 | 156 – 168 |
| L16 | [mm] | – | 98 |
| L17 | [mm] | – | 41 |
| L18 | [mm] | – | 10 |
| D1 | [mm] | – | Ø 155.5 |
| D2 (k6) | [mm] | – | Ø 38 |
| T1 | [mm] | – | 4xM12x18 |
| T2 | [mm] | – | 6xM10 Bolts |
| V1 ~ V9 | [mm] | *2 | Motor attachment dimensions are made to fit your servo motor. |
EJH 030 Dimensions – Hollow Output with Shrink Disk
| Frame Size | Unit | Note | EJH 030 |
| L1 | [mm] | – | 21.5 |
| L2 | [mm] | – | 3.5 |
| L3 | [mm] | – | 56.5 |
| L4 | [mm] | – | 65 |
| L5 | [mm] | – | 78.5 |
| L6 | [mm] | – | 235 |
| L7 | [mm] | – | 49 |
| L8 | [mm] | – | 81 |
| L9 | [mm] | – | 230 |
| L10 | [mm] | – | 92 |
| L11 | [mm] | – | 138 |
| L12 | [mm] | – | 76.2 |
| L13 | [mm] | – | 115 |
| L14 | [mm} | *1 | 156 – 168 |
| L15 | [mm] | – | 98 |
| D1 ±0.03 | [mm] | – | Ø 135.69 |
| D2 | [mm] | – | Ø 155.5 |
| D3 (h7) | [mm] | – | Ø 45 |
| T1 | [mm] | – | 4xM12x18 |
| T2 | [mm] | – | 6xM10 Bolts |
| V1 ~ V9 | [mm] | *2 | Motor attachment dimensions are made to fit your servo motor. |
EJH 030 Dimensions – Optional Mounting Flange (*1)
| Frame Size | Unit | Note | EJH 030 |
| L1 | [mm] | – | 41 |
| L2 | [mm] | – | 10 |
| L3 | [mm] | – | 49 |
| L4 | [mm] | – | 14 |
| L5 | [mm] | – | 111 |
| L6 | [mm] | – | 58 |
| L7 | [mm] | – | 13 |
| L8 | [mm] | – | 85.5 |
| L9 | [mm] | – | 3 |
| L10 | [mm] | – | 50 |
| L11 | [mm] | – | 7 |
| L12 | [mm] | – | 10.5 |
| D1 (k6) | [mm] | – | Ø 38 |
| D2 (h7) | [mm] | – | Ø 45 |
| D3 | [mm] | – | Ø 14 |
| D4 | [mm] | – | Ø 241 |
| D5 | [mm] | – | Ø 267 |
| D6 ±0.03 | [mm] | – | Ø 196.88 |