Xynova PRH19-57-25-HS Rotary Actuator
In stock
- BRAND:
- XYNOVA
- MODEL:
- PRH19-57-25-HS
- ORIGIN:
- China
- Warranty:
- 12 MONTHS
- AVAILABILITY:
- SUBJECT TO AVAILABILITY
- SKU:
- Xynova-PRH19-57-25-HS
Xynova PRH19-57-25-HS Rotary Actuator
Every gram at the end of a robot arm costs more than a gram near the shoulder. Weight at the wrist adds inertia to every joint behind it, slowing the arm, raising power draw and forcing bigger motors up the chain. That is why the most important property of a wrist actuator is often what it leaves out. The Xynova PRH19-57-25-HS weighs just 0.4 kg and fits in a Ø57 x 57 mm envelope, making it the smallest, lightest and fastest joint in Xynova's rotary lineup.
Key Features
Smallest Joint in the Range
At Ø57 x 57 mm, the PRH19-57-25-HS is little more than half the diameter of Xynova's mid range joints. That compact form makes it easier to package inside slim forearms, wrists and necks, where larger modules simply will not fit.
0.4 kg for Low Inertia
Weighing a third as much as the 1.2 kg mid range modules, this actuator keeps mass away from the end of the limb. Lower distal mass means the shoulder and elbow joints work less to move the arm, which can improve responsiveness and efficiency across the whole limb.
Fastest Output Speed
A 19:1 reduction gives a no load speed of 156 rpm, the highest in the Xynova rotary range. That speed suits quick wrist rotation, rapid tool orientation and natural looking head movement.
Precise Feedback
A 16 bit encoder supports repeatability of 0.1° or better, the same figure as Xynova's mid range modules. Xynova's decoupled adaptive control architecture and AI driven parameter tuning are designed to balance quick response with steady state accuracy.
Same 48 V Bus as Larger Joints
The module runs on 48 V, the same input as every other Xynova rotary actuator. A full limb can share a single supply voltage from hip to wrist, simplifying power distribution and wiring.
Xynova PRH19-57-25-HS Specifications
| Specification | PRH19-57-25-HS |
|---|---|
| Type | Integrated joint module |
| Input voltage | 48 V |
| Peak torque | 25 Nm |
| No load speed | 156 rpm |
| Gear ratio | 19:1 |
| Torque density | 63 Nm/kg |
| Weight | 0.4 kg |
| Size | Ø57 x 57 mm |
| Encoder resolution | 16 bit |
| Repeatability | ≤0.1° |
Where It Fits in the Xynova Range
| Model | Peak torque | No load speed | Weight | Diameter |
|---|---|---|---|---|
| PRH19-57-25-HS | 25 Nm | 156 rpm | 0.4 kg | 57 mm |
| PR20-102-130-HS | 130 Nm | 150 rpm | 1.2 kg | 102 mm |
| PR21-100-140-HS | 140 Nm | 130 rpm | 1.2 kg | 100 mm |
| PR64-110-500 | 500 Nm | 45 rpm | 1.6 kg | 110 mm |
| PR43-120-600-HB | 600 Nm | 32 rpm | 4.3 kg | 120 mm |
Because it is so small, the PRH19-57-25-HS has the lowest torque density in the range at 63 Nm/kg. Its value lies in size, weight and speed rather than torque per kilogram, so it is best matched to joints that carry light loads but move often.
Applications
- Humanoid wrists: pitch, roll and yaw joints just behind the hand.
- Forearm rotation: compact pronation and supination joints.
- Neck and head joints: fast, light rotation for camera and sensor heads.
- Small robot arms: distal joints on lightweight research or service arms.
- Grippers and end effector rotation: tool orientation at the end of an arm.
Who Should Buy the PRH19-57-25-HS?
Buy this module if your joint sits near the end of a limb, carries modest loads, and must be as small and light as possible. It suits humanoid teams designing wrists and necks, arm builders minimizing distal mass, and researchers pairing it with a dexterous hand. If your wrist must handle heavy tools or high impact loads, step up to a mid range module.
Which Should You Buy?
| If you need... | Choose |
|---|---|
| The smallest, lightest, fastest joint | PRH19-57-25-HS |
| Higher torque shoulders or elbows | PR20-102-130-HS or PR21-100-140-HS |
| High torque hips and knees | PR64-110-500 |
| Maximum peak torque | PR43-120-600-HB |
Before You Buy
- Calculate wrist torque: include the weight of the hand, the payload and the lever arm to confirm 25 Nm peak covers your worst case with margin.
- Ask for continuous torque: Xynova publishes peak torque only, so request rated continuous torque and duty cycle data.
- Check mounting and cabling: request interface drawings and plan cable routing through the wrist to the hand.
- Confirm the interface: ask about the communication protocol so the joint integrates with your controller and the rest of the limb.
- Confirm the HS variant: ask what the "HS" suffix and the "H" in the PRH prefix indicate before ordering.
- Order in sets: a full wrist often needs two or three of these joints, so quote the complete set.
Pricing and Availability
The Xynova PRH19-57-25-HS is sold by quote. Add it to your quote from this page with your quantity, and our team will reply with current price, cost details and lead time. The module carries a 12 month warranty, and availability depends on production allocation.
Frequently Asked Questions
How much torque does the Xynova PRH19-57-25-HS produce?
The PRH19-57-25-HS delivers 25 Nm of peak torque.
How much does the PRH19-57-25-HS weigh?
It weighs 0.4 kg, the lightest module in the Xynova rotary range.
How big is the PRH19-57-25-HS?
The module measures Ø57 x 57 mm.
How fast is the PRH19-57-25-HS?
It has a no load output speed of 156 rpm through a 19:1 reduction, the fastest in the Xynova range.
What voltage does the PRH19-57-25-HS use?
It runs on a 48 V input, the same as the other Xynova rotary actuators.
How much does the Xynova PRH19-57-25-HS cost?
Pricing is by quote. Request a quote on this page for current price and cost for your quantity.
Where can I buy the Xynova PRH19-57-25-HS?
You can buy it right here on this page. Add it to your quote and our team will follow up with pricing and availability.
Summary
The Xynova PRH19-57-25-HS puts 25 Nm of peak torque and 156 rpm into a 0.4 kg, Ø57 x 57 mm joint, giving designers a compact, low inertia option for wrists, necks and other joints near the end of a limb. If you are ready to buy lightweight joint modules for your next robot, request a quote on this page for current price and availability.
