Ti5 Robotics · Joint modules

Ti5 CRA-RI40-52-PRO rotary actuator

3.5 N·m at 51:1, 5 N·m at 101:1, 320 g in Φ40 × 62. The size most often used for a wrist roll or a finger base on a dexterous hand research rig.

Full specification

ParameterValue
Frame / sizeΦ40 × 62 mm
Ratios51:1 / 101:1
Rated torque @2000 rpm input3.5 / 5 N·m
Start–stop peak8.3 / 11 N·m
Weight0.32 kg
Supply voltage24–80 V
EncoderAbsolute, integrated
CommsCAN, per configuration

Source: Our current Ti5 datasheet — being re-verified against the latest Ti5 catalogue. Figures verified November 2026 — confirm the exact variant against the datasheet issued with your order.

When this is the right choice

  • 11 N·m start–stop at 320 g. The peak-to-rated ratio of 2.2 gives a wrist real shock tolerance at a very low mass.
  • 24–80 V — same wide window as the rest of the CRA series.
  • Φ40 × 62 fits a hand palm. Most wrist actuators in this torque class are 10–20 mm longer.

When it is the wrong choice

  • 5 N·m rated is the 101:1 figure. At 51:1 it is 3.5 N·m — do not specify the ratio after the sizing calculation, specify it before.
  • Specification still being re-checked against the current Ti5 catalogue; treat as approximate until the quotation confirms it.
  • No brake, no torque sensor for this frame that we can publish.

Alternatives at a similar level

Quote this model

Model, quantity and destination is enough to start — we come back with price, availability and the datasheet.

Quoting for CRA-RI40-52-PRO

One business day reply. Prefer email? [email protected].

CRA-RI40-52-PRO FAQ

Ti5 or DAMIAO at this size?

DAMIAO DM-JH11 is 345 g with 4.8 N·m at 101:1 and usually costs less. Ti5 wins when the 24–80 V input range or the shorter package matters. Ask us for both quotes — we carry both.

What is the difference between PRO and PRO-S?

PRO is the standard CRA rotary actuator; PRO-S is the short-body variant with a single ratio. The S parts are lighter for the same torque but give up the ratio choice.

How long does it take to ship?

Confirmed per order at quotation, alongside the specification re-check on this series.

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