CNC Stainless Steel Turned Shafts Deep Groove Turning for Robotics
Actuators
Material and Process Advantages
Stainless steel shafts are made of 17-4PH precipitation hardened
stainless steel, and a deep groove turning process is used to
machine a 0.5-2mm deep, ± 0.01mm precision annular groove on the
surface of the shaft. This design not only reduces the weight of
the shaft (by 15% -20%), but also improves fatigue resistance
through stress dispersion effect (increasing fatigue life by 30%).
In addition, the 17-4PH material has undergone H900 aging
treatment, with a hardness of HRC 40-45 and a surface roughness of
Ra 0.4 μ m, ensuring that the shaft body maintains a low friction
coefficient (μ ≤ 0.12) during high-frequency reciprocating motion.
Industry Applications and Performance
In Robotics Actors, this type of deep groove stainless steel shaft
is widely used in joint drive units and linear modules. Its deep
groove structure can accommodate more lubricating grease,
significantly extending the maintenance cycle (from 500 hours to
2000 hours). Meanwhile, the corrosion resistance of 17-4PH makes it
suitable for medical robots (such as surgical arms) and outdoor
industrial robots (such as agricultural automation equipment),
maintaining stable performance in pH 3-10 acidic and alkaline
environments. Actual test data shows that the positioning accuracy
of actuators equipped with such shafts can reach ± 0.005mm, with a
repeat positioning error of less than 0.01mm, fully meeting the ISO
9283 industrial robot performance standard.
Specifications
| Material | Ordinary brass H59 H62 H63 H65 H68 H70 H75 H80 H85 H90 H96,Purple
copper H96 H85 H62 T1 T2 T3 Oxygen free copper TU1 TU2 Deoxidized
copper TUP TUMn,Special copper such as arsenic copper, tellurium
copper, silver copper |
Manufacturing process | CNC machining, turning, milling, engraving, grinding, cutting,
stamping, laser, boring |
Accuracy | +/-0.0025mm |
| Colour | Any color that can be achieved by anodizing |
Surface Treatment | Electroplating (gold, silver, zinc, chromium, nickel), electrolytic
polishing, powder coating, sandblasting, anodizing, etc. |
Drawing tools | CAD, Pro/E, Solidworks, UG etc. |
Major equipment | CNC machining center (milling), CNC lathes, grinders, etc. |
| Inspection | Depth caliper vernier, universal protractor, clock gauge, internal
Celsius gauge |
The Application Brought by the Performance of Brass:
1. Electromagnetic shielding performance
Characteristics: Brass can effectively shield electromagnetic
interference and radio frequency interference .
Application: Used as a casing for electronic devices to protect
internal circuits from external electromagnetic interference and
prevent electromagnetic waves generated by the device from
interfering with other devices.
2. Mechanical strength
Characteristics: Brass has high mechanical strength and hardness,
which can protect internal electronic components from physical
damage.
Application: Used for electrical enclosures that require high
strength and durability.
3. Heat dissipation performance
Characteristics: Brass has good thermal conductivity and can help
dissipate heat.
Application: Used for electrical enclosures that require heat
dissipation, helping to cool down internal components.
4. Corrosion resistance
Characteristics: Brass has good corrosion resistance to humid
environments and chemical media.
Application: Used for electrical enclosures in humid or corrosive
environments.
CNC Machining Tolerance
| Precision Machining | Metals, PEEK, And
ULTEM with Drawing | Other Plastics
with Drawing | No Drawing |
| Linear Dimension | +/- 0.0025 mm
+/- 0.0001 inch | +/- 0.05 mm
+/- 0.002 inch | ISO 2768 Medium |
Hole Diameters
(Not Reamed) | +/- 0.0025 mm
+/- 0.0001 inch | +/- 0.05 mm
+/- 0.002 inch | ISO 2768 Medium |
| Shaft Diameters | +/- 0.0025 mm
+/- 0.0001 inch | +/- 0.05 mm
+/- 0.002 inch | ISO 2768 Medium |
Why Choose Us to Process for You?
Choosing our CNC machining services ensures not only precision and
quality but a partnership built on trust and reliability. At Polestar Metal, we are committed to delivering excellence in every aluminum
component we produce. From prototyping to full-scale production, we
are equipped to meet your specific needs and bring your designs to
life.
