> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# High Torque Waterproof Metal Coreless Digital Servo (35KG, 180°, IP54)

**Type:** Product page · **SKU:** SER0065 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/high-torque-waterproof-metal-coreless-digital-servo-35kg-180-ip54.html ([markdown](https://core-electronics.com.au/high-torque-waterproof-metal-coreless-digital-servo-35kg-180-ip54.html.md))

High-torque, waterproof coreless digital servo with 35kg torque and 180-degree control. Features reinforced steel gears, dual ball bearings, and...

## Pricing

- **Price:** $43.60 (inc GST) — $39.64 AUD, exc GST
- **Quantity discounts:** 6+ $37.65 (exc GST) · 12+ $36.07 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 02 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SER0065:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SER0065:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This is a high-torque waterproof coreless digital servo with a robust metal construction. It boasts an impressive torque of 35kg, allowing for precise control within a 180-degree range. With improved linear motion, it features an internal gear system made of reinforced steel gears with an optimized center distance of 2.0, enhancing its performance. The servo incorporates a dual ball bearing design and utilizes a hollow-cup motor for enhanced heat dissipation and extended lifespan.

![35kg Metal Waterproof Servo](https://core-electronics.com.au/attachments/localcontent/1_3373194ce88.png)

Furthermore, the servo comes equipped with overload protection, ensuring a safer operation. When the servo stalls, the output torque exceeds the overload torque and remains at an elevated level for over 8 seconds, after which the current drops by 80%.

![Quality Material of Metal Waterproof Servo](https://core-electronics.com.au/attachments/localcontent/2_362357fabe9.png)

To enhance its water resistance, the servo's joints are fortified with waterproof gaskets, and the circuit board is coated with a waterproof varnish. Both the motor and the potentiometer are sealed with a specialized adhesive. These measures contribute to the servo's exceptional waterproof capabilities. Moreover, this servo is accompanied by a selection of different-shaped servo horns, enabling its application in a wider range of environments.

![Waterproof Design of Metal Waterproof Servo](https://core-electronics.com.au/attachments/localcontent/9_18012b4909c.jpg)

**The Principle of Coreless Servo**

The characteristic of a hollow cup servo is that its motor rotor is an extremely lightweight, poleless, hollow rotor, with magnets placed inside the cylinder, which is the hollow cup motor. The output power of the hollow cup servo is proportional to the distance it needs to rotate. If the output shaft needs to rotate a long distance, the control circuit will send a power pulse of maximum width to make the motor run at full speed; if it only needs to rotate a short distance, the motor will run at a slower speed.

![Interface Definition Diagram of Metal Waterproof Servo](https://core-electronics.com.au/attachments/localcontent/1_2816010f014.jpg)

Interface Definition Diagram

![Dimensional Diagram of Metal Waterproof Servo](https://core-electronics.com.au/attachments/localcontent/2_316056a1a64.jpg)

![](https://core-electronics.com.au/attachments/localcontent/3_237492612dd.jpg)

Dimensional Diagram

###  Applications

15. Build robots
16. Driving part of various automated equipment
###  Specification

**Electrical characteristics**

19. Operating Voltage: 5-9V
20. No-load Speed: 0.142sec/60°(70RPM)@6V, 0.111sec/60°(90RPM)@7.4V,0.098sec/60° (102RPM) @ 8.4V
21. Operating Current: 260mA@6V,300mA @7.4V,340mA@8.4V
22. Stall Torque: 25.1kg.cm/349.18oz.i@6V, 30.9kg.cm/429.87oz.in@7.4V,34.2kg.cm/475.78oz.in @ 8.4V
23. Stall Current: 2.5A@6V,3.1A@7.4V,3.6A@8.4V
24. Static Current: 10mA
25. Rated Load: 8.9kg.cm@6V, 9.8kg.cm@7.4V,11.5kg.cm@8.4V
26. Rated Current: 800mA@6V,1000mA@7.4V,1200mA@8.4V
27. Kt Constant: 9.7kg.cm/A
**Control characteristics**

29. Control Signal: PWM
30. Angle: 180° ± 5° (at 500 ? 2500µsec)
31. Angle Deviation: = 5°
32. Centering Deviation: = 1°
33. Neutral Position: 1500µsec
34. Deadband Width: = 4µsec
35. otation Direction: Counterclockwise (from 1500 to 2000 µsec)
36. Pulse Width: 500 ? 2500 µsec
37. Signal High Level Voltage: 2-5V
38. Signal Low Level Voltage: 0-0.45V
39. Signal Period: 20ms
**Mechanical Specifications**

41. Casing Material: PA+Aluminum
42. Housing Material: Aluminum
43. Gear Material: Steel
44. Bearing Type: Ball Bearing
45. Output Shaft: 25T/5.9mm
46. Gear Backlash: = 0.5°
47. Arm Backlash: 0°
48. Output Shaft Screw: M3X6
**Other parameters**

50. Motor Noise: 45±5dB
51. Servo No-load Noise: 65±5dB
52. Waterproof Rating: IP54 (splash-proof)
53. Electronic Protection: 8 seconds stall protection
54. Temperature Protection: > 70°C
55. Storage Temperature: -20°C ~ 80°C
56. Operating Temperature: -10°C ~ 60°C
###  Parts List

58. Coreless Waterproof Servo-35KG 180° x1
59. Metal Servo Arm x1
60. Servo Horn Accessories Pack x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SER0065-1.jpg)