EJ Series variants, worm gear family
Nidec Drive Technology Corporation has been at the forefront of developing gear technology to fulfill the requirements of our OEM customers. Our close partnerships with our installed customer base provided much insight into their evolving need for more high-precision right-angle gearing options. In order to fill that need, Nidec DTC offers a full line of high-precision worm gearboxes, known as our EJ Series.
These servo grade gearheads are ideal for the most dynamic cyclical or continuous motion control applications. Each series incorporates a globoidal worm gear mesh design in order to achieve the torque handling capacity, shock load capability and level of precision that our customers have come to expect from us. Experience the ultimate in flexibility with multiple backlash options and several mounting configurations to get into the tightest spaces. We can customize these units even further to satisfy a variety of applications and operating environments.
Advantages of the EJ SERIES platform design
- Quiet operation, in comparison to traditional worm gearing products
- High shock load capacity, using oversized tapered roller bearings
- Absolute zero backlash available
- Wide range of output mounting options – Solid, hollow, dual shaft, shrink disc, ISO flange
- Compact, lightweight construction
- Exact gear reduction ratios for simplified system tuning
- Optimized mounting interface for virtually any motor
- Maintenance free, lubricated for life
EJ Series, Summary Level Table
| Product Series | EJM | EJL | EJH | EJP | EJS |
|---|---|---|---|---|---|
| Economy Class | Performance Class | Heavy Industrial Class | High Precision Class | Hygienic Class | |
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| Series Features | Globoidal worm gear mesh
Economy leader of category Aluminum housing Conventional precision range |
Best price – performance ratio
Multiple output options Aluminum/cast iron housing Three backlash levels |
Globoidal worm gear mesh
Strong internal structure Robust cast iron housing Low backlash option |
Globoidal worm gear mesh
Zero backlash option Optimal sound characteristics Performance leader of category |
Globoidal worm gear mesh
IP69K rated aseptic design 316 stainless with food grade oil Various output options |
| Frame Size | Variety: 6 | Variety: 11 | Variety: 5 | Variety: 6 | Variety: 5 |
| Reduction Ratios | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60 | 3.125, 5.2, 7.25, 10.25, 14.5, 15.25, 19.5, 20.5, 29.5, 30, 45, 60, 90 | 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 60 | 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 60 | 5, 7, 10, 15, 20, 25, 30, 40, 50, 60 |
| Nominal Output Torque (Nm) | 29 – 505 | 8 – 3788 | 35 – 475 | 35 – 480 | 41 – 396 |
| Maximum Acceleration Torque (Nm) | 33 – 614 | 13 – 6250 | 46 – 663 | 46 – 660 | 47 – 721 |
| Max. Input speed (rpm) | 4000 | 6000 | 4000 | 6000 | 3000 |
| Backlash (Arc-min) | 12 – 41 | 0.5 – 10 | 6 – 32 | 0 – 24 | 4 – 24 |
| Output Hollow Bore Size (mm) | ø25.4 – 74.6 | ø14 – 100 | ø25 – 60 | ø25 – 60 | ø19 – 35 |