Digital guide
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Detailed content
- P — Hollow Shaft (Profile/Bore Type)
- 303250 — Mechanical/Electrical Specification Code
- D — Shaft Variant (Hollow bore, different clamping mechanism than Z)
- 3 — Revision/Version
Technical Specifications:
| Parameter | Value |
|---|---|
| Type | Multi-Turn Absolute Optical Encoder |
| Resolution (Single-Turn) | 25-bit (33,554,432 counts/rev) |
| Resolution (Multi-Turn) | 4096 turns (12-bit turn count) |
| Total Resolution | 37-bit (137,438,953,472 counts) |
| Output Interface | EnDat 2.2 / BiSS-C |
| Hollow Bore Diameter | 30 mm (1.18 in) |
| Outer Diameter | 58 mm (2.28 in) |
| Overall Length | 85 mm (3.35 in) |
| Max Speed | 6,000 RPM |
| Supply Voltage | 5 VDC ± 5% (EnDat) / 5V or 3.3V (BiSS-C) |
| Protection Rating | IP65 (with cable gland), IP67 (sealed) |
| Weight | 190 g |
| Operating Temperature | -25°C to +85°C |
| Shock Rating | 30g, 11ms |
| Vibration Rating | 10g, 10–2000 Hz |
Key Difference from PRD-P303250Z-3:
| Feature | Z Variant | D Variant |
|---|---|---|
| Clamping Mechanism | Set-screw clamping hub | Splined clamping hub (higher torque transmission) |
| Max Transmission Torque | 15 Nm | 25 Nm |
| Runout | ≤5 μm | ≤3 μm |
| Application Focus | General servo | High-torque direct-drive |
Accuracy Parameters:
- Position Accuracy (single-turn): ±20 arcsec (0.0056°)
- Position Accuracy (multi-turn): ±40 arcsec per turn
- Repeatability: ±5 arcsec
- Update Rate: 4.17μs (EnDat 2.2)
Structural Features:
- Housing Material: Stainless Steel 303
- Shaft/Bore: Hardened Stainless Steel 17-4PH with internal splines
- Bearing: Precision angular contact ball bearing (sealed)
- Sealing: Dual-lip Viton shaft seal
- Mounting: Splined clamping hub (30mm bore), torque-locked
Working Principle:
Identical optical multi-turn encoding principle as PRD-P303250Z-3. The D variant incorporates an internal spline interface for higher mechanical coupling rigidity, enabling direct integration into high-torque direct-drive motor assemblies.
Applicable Industries: Heavy-duty CNC spindles, direct-drive rotary tables, industrial robot joints, satellite antenna gimbals, marine propulsion positioning.
