Full specification
| Parameter | Value |
|---|---|
| Frame / size | Φ48 × 48 mm |
| Ratio | 101:1 |
| Rated torque | 6.5 N·m |
| Peak torque | 16 N·m |
| Rated output speed | 30 rpm |
| Weight | 0.276 kg |
| Through-bore | Φ8 mm |
| Holding brake | Static torque ≥0.15 N·m, power-off engaged |
| Torque sensor | 16 N·m range, integrated |
| Encoder | Dual 23-bit magnetic |
| Comms | CANopen / CAN FD / EtherCAT · ESI GDESC_CIA402_V4_JX |
| Supply | 48 V DC · 1.3 A rated / 3.2 A peak |
Source: Crabnova RBV3 parameter sheet (2026-10-11) and the RBV3 drawing set; torque sensor range from the drawing accompanying each frame. Figures verified November 2026 — confirm the exact variant against the datasheet issued with your order.
When this is the right choice
- Sensed, braked and tiny. 0.276 kg with both features inside — a neck or wrist axis that can feel contact without an external sensor.
- One ESI for the whole series. The same EtherCAT description file as the R120-MAX, so a mixed build configures once.
- 23-bit magnetic encoders on both sides at a frame this small.
- Drop-in for a wrist rebuild. The Φ48 bolt pattern is the common one for small harmonic wrists.
When it is the wrong choice
- Anything structural. 16 N·m peak is a wrist figure, not an elbow one.
- Holding a heavy hand at power-off. The brake holds 0.15 N·m statically — sized for the joint, not for a 1 kg end effector on a long lever.
- Cost-sensitive grippers. A planetary unit or a smart servo is cheaper where backlash does not matter.
Alternatives at a similar level
- Crabnova CE-RBV3-R58-101 — 20 N·m, 0.495 kg — the next step up
- Tongchuan TCHL-11 — 5.3 N·m, 0.37 kg, EtherCAT / CAN-FD, no torque sensor
- Crabnova CE-RB-R48-101-Lite — The same frame without brake or sensor, 0.26 kg
- DAMIAO DM-J3507 — 0.8 N·m planetary at 150 g, 24 V — much smaller class
Quote this model
Model, quantity and destination is enough to start — we come back with price, availability and the datasheet.
CE-RBV3-R48-101 FAQ
Is the torque sensor really integrated at this size?
Yes — the RBV3 series carries brake and sensor in the same envelope across the range. What differs is the sensor range: 16 N·m here, 600 N·m on the R120-MAX.
What is the difference from RBV1 R48?
RBV3 adds the brake and the sensor and raises the rated torque to 6.5 N·m (the RBV1 Lite frame is quoted at 5 N·m). Mechanically they share the Φ48 frame.
Can it hold a hand at power-off?
The brake holds 0.15 N·m of static torque. That is enough to stop the joint drifting, not to carry a heavy end effector on a long forearm — size the lever before you rely on it.
How long does it take to ship?
Confirmed per order at quotation — brake, sensor and connector options all affect it.
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