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EJH 035 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 035 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] | – | 341 | 381 | 404 | 430 | 442 | 456 | 475 | 471 | 468 | 450 | 429 | 413 | 397 |
| Maximum Acceleration Torque | [Nm] | – | 480 | 537 | 568 | 604 | 619 | 638 | 663 | 649 | 649 | 622 | 593 | 571 | 548 |
| Emergency Stop Torque | [Nm] | – | 2,432 | 2,644 | 2,731 | 2,845 | 2,864 | 2,889 | 2,885 | 2,819 | 2,691 | 2,570 | 2,293 | 2,076 | 2,037 |
| No Load Running Torque | [Nm] | *1 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 |
| 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 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 15,560 | 115,560 |
| Maximum Axial Load | [N] | *3 | 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 |
| Moment of Inertia (≤ Ø19) | [kgcm2] | – | 28.3 | 23,9 | 21.2 | 19.5 | 18.3 | 17.4 | 15.4 | 14.7 | 14.4 | 14.2 | 14.0 | 13.9 | 13.9 |
| Moment of Inertia (≤ Ø28) | [kgcm2] | – | 32.3 | 27,8 | 25.2 | 23.4 | 22.2 | 21.4 | 19.4 | 18.7 | 18.3 | 18.1 | 18.0 | 17.9 | 17.8 |
| Moment of Inertia (≤ Ø38) | [kgcm2] | – | 36.9 | 32,5 | 29.8 | 28.1 | 26.9 | 26.0 | 24.0 | 23.3 | 23.0 | 22.8 | 22.6 | 22.5 | 22.5 |
| Efficiency | [%] | *4 | 91 | 91 | 91 | 90 | 90 | 89 | 87 | 84 | 83 | 79 | 75 | 72 | 69 |
| Torsional Rigidity | [Nm/arcmin] | – | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 | 79.2 |
| Max Torsional Backlash (Standard) | [Arc-min] | – | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 |
| Max Torsional Backlash (Low) | [Arc-min] | – | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 | ≤ 6 |
| Noise Level | dB [A] | *5 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 | ≤ 83 |
| 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 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 |
- 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 035 Dimensions – Hollow Output Shaft
| Frame Size | Unit | Note | EJH 035 |
| L1 | [mm] | – | 15 |
| L2 | [mm] | – | 5 |
| L3 | [mm] | – | 87 |
| L4 | [mm] | – | 102 |
| L5 | [mm] | – | 234 |
| L6 | [mm] | – | 71.5 |
| L7 | [mm] | – | 97 |
| L8 | [mm] | – | 262 |
| L9 | [mm] | – | 108 |
| L10 | [mm] | – | 154 |
| L11 | [mm] | – | 88.9 |
| L12 | [mm] | – | 131 |
| L13 | [mm] | *1 | 174.5 – 186.5 |
| L14 | [mm} | – | 113 |
| L15 | [mm] | – | 64.5 |
| L16 | [mm] | – | 18 |
| D1 ±0.03 | [mm] | – | Ø 134.26 |
| D2 | [mm] | – | Ø 184 |
| D3 (h7) | [mm] | – | Ø 60 |
| T1 | [mm] | – | 4xM12X18 |
| T2 | [mm] | – | 6XM10 Bolts |
| V1~V9 | [mm] | *2 | Motor attachment dimensions are made to fit your servo motor. |
EJH 035 Dimensions – Solid Output Shaft
| Frame Size | Unit | Note | EJH 035 |
| L1 | [mm] | – | 63 |
| L2 | [mm] | – | 5 |
| L3 | [mm] | – | 97.5 |
| L4 | [mm] | – | 87 |
| L5 | [mm] | – | 106.5 |
| L6 | [mm] | – | 209.5 |
| L7 | [mm] | – | 316 |
| L8 | [mm] | – | 71.5 |
| L9 | [mm] | – | 97 |
| L10 | [mm] | – | 262 |
| L11 | [mm] | – | 108 |
| L12 | [mm] | – | 154 |
| L13 | [mm] | – | 88.9 |
| L14 | [mm} | – | 131 |
| L15 | [mm] | *1 | 174.5 – 186.5 |
| L16 | [mm] | – | 113 |
| L17 | [mm] | – | 48.5 |
| L18 | [mm] | – | 14 |
| D1 | [mm] | – | Ø 184 |
| D2 (k6) | [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 035 Dimensions – Hollow Output with Shrink Disk
| Frame Size | Unit | Note | EJH 035 |
| L1 | [mm] | – | 15 |
| L2 | [mm] | – | 5 |
| L3 | [mm] | – | 57 |
| L4 | [mm] | – | 87 |
| L5 | [mm] | – | 101 |
| L6 | [mm] | – | 271 |
| L7 | [mm] | – | 71.5 |
| L8 | [mm] | – | 97 |
| L9 | [mm] | – | 262 |
| L10 | [mm] | – | 108 |
| L11 | [mm] | – | 154 |
| L12 | [mm] | – | 88.9 |
| L13 | [mm] | – | 131 |
| L14 | [mm} | *1 | 174.5 – 186.5 |
| L15 | [mm] | – | 113 |
| D1 ±0.03 | [mm] | – | Ø 134.26 |
| D2 | [mm] | – | Ø 184 |
| D3 (h7) | [mm] | – | Ø 60 |
| T1 | [mm] | – | 4xM12x18 |
| T2 | [mm] | – | 6xM10 Bolts |
| V1 ~ V9 | [mm] | *2 | Motor attachment dimensions are made to fit your servo motor. |
EJH 035 Dimensions – Optional Mounting Flange (*1)
| Frame Size | Unit | Note | EJH 035 |
| L1 | [mm] | – | 48.5 |
| L2 | [mm] | – | 14 |
| L3 | [mm] | – | 64.5 |
| L4 | [mm] | – | 18 |
| L5 | [mm] | – | 129 |
| L6 | [mm] | – | 80.5 |
| L7 | [mm] | – | 13 |
| L8 | [mm] | – | 97.5 |
| L9 | [mm] | – | 5 |
| L10 | [mm] | – | 63 |
| L11 | [mm] | – | 7 |
| L12 | [mm] | – | 12 |
| D1 (k6) | [mm] | – | Ø 45 |
| D2 (h7) | [mm] | – | Ø 60 |
| D3 | [mm] | – | Ø 14 |
| D4 | [mm] | – | Ø 267 |
| D5 | [mm] | – | Ø 298 |
| D6 ±0.03 | [mm] | – | Ø 222.28 |