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PN4135KN001 is an NSK Megatorque PN Series (high-torque low-profile) direct-drive motor. The PN series features a low-profile, high-torque-density design (this model: dia. 280 mm, height only 95 mm), suited to height-constrained rotary indexing.
Why zero-backlash direct drive: Megatorque motors drive the load directly without gears or belts — no backlash, no wear parts, no accuracy degradation over time, fast settling, low noise and maintenance-free. The large hollow bore (50 mm on this model) passes cables, piping or laser paths straight through, simplifying machine design. Widely used in semiconductor/electronic-component inspection, vision processing and rotary indexing stages.
Key specs: maximum output torque 135 (200 VAC only) N·m (rated 45 (200 VAC only) N·m), max speed 3 (200 VAC only) s⁻¹; a built-in absolute position sensor (2,621,440 count/rev) delivering ±2 arc-sec repeatability and 60 (±30) arc-sec absolute accuracy; allowable axial load 9,500 N, allowable moment load 160 N·m, mass 26 kg. Pairs with the EDD driver unit series (100–240 VAC per the NSK pairing table). An EtherCAT-compatible driver option is available for this model (NSK catalog E3516). See the attached official catalog for dimensions and speed–torque characteristics.
Same-series part numbers: PN2012KN201, PN3045KN001, PN4180KN001.
Sizing & Integration Support
Direct-drive motor sizing involves the inertia ratio (load inertia / rotor inertia) and the motion profile against the speed–torque curve. Add your load conditions (inertia, motion angle, cycle time, mounting orientation) to the inquiry cart — the Nahshon engineering team will help you select the right model and confirm specs, quotation and delivery with NSK.
| Specification | Unit | PN4135KN001 |
|---|---|---|
| Series | - | Megatorque PN Series (high-torque low-profile) |
| Motor outer diameter | mm | φ280 |
| Motor height | mm | 95 |
| Hollow diameter | mm | φ50 |
| Maximum output torque (200/100 VAC) | N·m | 135 (200 VAC only) |
| Rated output torque (200/100 VAC) | N·m | 45 (200 VAC only) |
| Maximum rotational speed (200/100 VAC) | s⁻¹ | 3 (200 VAC only) |
| Rated rotational speed (200/100 VAC) | s⁻¹ | 1 (200 VAC only) |
| Position sensor | - | Built-in absolute position sensor |
| Position sensor resolution | count/rev | 2 621 440 |
| Absolute positioning accuracy | arc-sec | 60 (±30) |
| Repeatability | arc-sec | ±2 |
| Axial runout accuracy | µm | 30 |
| Radial runout accuracy | µm | 50 |
| Allowable axial load | N | 9 500 |
| Allowable radial load | N | 9 500 |
| Allowable moment load | N·m | 160 |
| Rotor inertia | kg·m² | 0.057 |
| Allowable load inertia range | kg·m² | 0.57 to 3.99 |
| Mass | kg | 26 |
| Driver unit | - | EDD driver unit (per NSK pairing table) |
| Environmental conditions | - | 0–40 °C, 20–80 %RH, indoors, free of dust/condensation/corrosive gas (IP30 equivalent) |
series PN3&PN4・Megatorque PN Series (high-torque low-profile)
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