SteadyWin GIM3505-8 Robot Gear Motor – 8:1 Reducer Planetary
📦 Location of the warehouse: China
Free Shipping from $50 in the US, $70 for non-continental US
- US Delivery Time: 2~7 Business days.
- Non-Continental US Delivery Time: 3~9 working days.
- Pre-Ordering: If an item is unavailable, you can pre-order it. We'll dispatch once stock is replenished, usually within 10 working days. Special pre-sale products will specify the expected arrival time in the description.
- Express Shipping: Need it faster? Contact us via email or through our live chat support, and we'll arrange expedited delivery for you.
SteadyWin GIM3505-8 Robot Gear Motor – 8:1 Reducer Planetary
⚙️ SteadyWin GIM3505-8 – Compact Power for Precision Robotics
The SteadyWin GIM3505-8 is a high-efficiency planetary gear stepper motor engineered for robotics, automation, and embedded motion control. With a 24V input, 29W output, and an integrated 8:1 reduction gearbox, it delivers stable torque and precise positioning in a compact Ø43 mm form factor 🌀.
🔌 Optional driver modules and 14-bit magnetic encoders enable closed-loop CAN bus control, making it ideal for industrial-grade applications such as collaborative robots, exoskeletons, and mobile platforms.
Whether you're building a smart actuator or a multi-axis robotic joint, the GIM3505-8 offers the reliability and responsiveness you need—without compromising on size or efficiency 💡.
🌟 Key Features
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📦 Compact & Mighty Just Ø43×30 mm and weighing only 97 g, this motor is tailor-made for micro-robotics, wearable exoskeletons, and space-constrained automation systems.
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💪 High Torque Output Delivers a rated torque of 0.65 N·m and stall torque up to 1.27 N·m, ensuring stable and responsive performance even under demanding loads.
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🧠 Integrated Driver Equipped with a built-in GDS34 driver board, supporting CAN bus communication for smooth, real-time control in industrial and robotic applications.
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🎯 Precision Encoder Features an onboard 14-bit magnetic encoder, with options for external encoder integration and a customizable brake—ideal for closed-loop systems.
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🛡️ Built for Harsh Conditions Rated IP54 for dust and splash resistance, and operates reliably across a wide temperature range from –20°C to +80°C—ready for field deployment.
📊 Specifications
| Feature | Unit | Value |
|---|---|---|
| Model | GIM3505-8 | |
| Winding method | Δ / Y (listed) | |
| Winding method (selected) | Y | |
| Driver board model | GDZ34 | |
| Rated voltage | V | 24 |
| Voltage range | V | 12–40 |
| Rated power | W | 37 |
| Rated torque | N·m | 0.67 |
| Peak torque (Stall torque) | N·m | 1.79 |
| Rated speed after reduce | RPM | 230 |
| Max speed after reduce | RPM | 400 |
| Rated current | A | 1.53 |
| Peak current (Stall current) | A | 3.99 |
| Phase-to-phase resistance | Ω | 5.47 |
| Phase-to-phase inductance | mH | 0.48 |
| Speed constant | rpm/V | 16.67 |
| Torque constant | N·m/A | 0.44 |
| Number of pole pairs | Pairs | 11 |
| Gear rate | 8:1 | |
| Gear type | Planetary | |
| Reducer gear material | ALU | |
| Reducer gear backlash | arcmin | 15 |
| Motor weight without driver | g | 84 |
| Motor weight with driver | g | 97 |
| Size without driver | mm | Ø43 × 23.6 |
| Size with driver | mm | Ø43 × 30 |
| Max axial load | N | 75 |
| Max radial load | N | 300 |
| Noise | dB | <60 |
| Communication | CAN & RS-485 | |
| Second encoder (the second encoder on the output shaft) | NO | |
| Protection grade (Motor Protection Grade) | IP54 | |
| Working temperature | °C | -20 to +80 |
| Resolution of the encoder on the driver | Bit | 14 bit |
| Can support separate encoder or not | YES | |
| Can support custom brakes | YES |
🚀Applications
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🤖 Robotic joint modules
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🦿 Exoskeleton actuators
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🎥 Gimbal stabilizers
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🚁 UAV propulsion systems
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🏭 Industrial automation
🔧Version Compatibility Overview
| Feature | V1.0 | V1.1 |
|---|---|---|
| Encoder Type | AS5047P (external magnetic encoder) | MT6816 / MA7XX (integrated encoder) |
| Driver Compatibility | ❌ Not compatible with GDS/GDZ drivers | ✅ Compatible with GDS34 / GDZ34 |
| Communication Protocol | SPI only | CAN / RS-485 |
| Integration Level | Encoder only, no onboard driver | Integrated driver + encoder |
| Second Encoder Support | ❌ Not supported | ✅ Supported (via GDZ driver with MA7XX input) |
| Application Focus | Custom control systems, MCU integration | Plug-and-play motion control, industrial use |
1. General Shipping Information
- We provide premium shipping methods with a tracking number for each order.
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Shipping address should be input in English without any special symbols to help the courier company recognize your address in the system. We will ship according to the shipping address you provided. Please notify us of any address change before your order is marked "Shipped" to avoid parcel loss.
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Please contact our customer service staff immediately if you need to cancel or change an order. Once your order has reached "Shipped" status, it can no longer be canceled or changed in any way. To avoid complications, please recheck your shopping cart before checkout.
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We can ship all in-stock orders within 1 business day as your order has been confirmed.
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All items are inspected before dispatch and are carefully hand-packed.
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With standard courier practice, you need to check the contents of the parcel before signing for your goods. Otherwise, we will not be held responsible for any damage that may have occurred in transit.
2. Shipping Options & Rates (United States)
(For Products in the US Warehouse & Global Warehouse)
2.1 Continental U.S. (50 States)
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| USPS Ground Advantage | $0.00 - $5.00 | $9.99 | 3-7 Business Days |
| USPS Ground Advantage | $5.00 - $50.00 | $5.99 | 3-7 Business Days |
| USPS Ground Advantage | Over $50.00 | Free | 3-7 Business Days |
|
USPS Priority Mail (Faster Option) |
$0.00 - $50.00 | $19.99 | 1-4 Business Days |
| USPS Priority Mail | Over $50.00 | $17.59 | 1-4 Business Days |
2.2 Non-Continental U.S.
(Includes Alaska, Hawaii, Puerto Rico, Guam, Virgin Islands, etc.)
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| USPS Ground Advantage | $0.00 - $5.00 | $9.99 | 5-9 Business Days |
| USPS Ground Advantage | $5.00 - $70.00 | $7.99 | 5-9 Business Days |
| USPS Ground Advantage | Over $70.00 | Free | 5-9 Business Days |
Important Notice:
- Before placing your order, please check the inventory location on the product page to confirm the delivery timeframes.
- For products stored in the Global Warehouse (Shenzhen), we will ship them directly from China.
- If you place an order for products from both the U.S. warehouse and the Global warehouse, we will ship your order separately: the products from the Global warehouse will be sent from China, and the products from the U.S. warehouse will be sent from the U.S. warehouse.
3. Warehouse Locations
Our products are stored in both our U.S. and Global warehouses to provide more flexible logistics solutions. On each product's description page, we indicate the specific warehouse location.
3.1 U.S. Warehouse
For products stored here, we use USPS for shipping. Logistics within U.S. are very efficient, with an estimated delivery time of 3-7 business days.
3.2 Global Warehouse (China)
Located in Shenzhen, Guangdong.
For orders shipping from our Global Warehouse, we typically use YunExpress. Given the complexities of international shipping, the estimated delivery time is around 10 business days, though this may vary due to customs processes.
4. Customs and Taxes
Effective Date: December 10, 2025
At OpenELAB, we are committed to providing accurate product descriptions and high-quality electronics. The following policy outlines your rights and obligations, designed to be fair to both our customers and our business operations globally.
1. Warranty Policy
A. Standard Limited Warranty (Global & US)
For customers in the United States, Asia, and other non-EU regions:
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Warranty Period: OpenELAB provides a 12-month warranty from the date of delivery.
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Coverage: This warranty covers defects in material and workmanship under normal use.
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Resolution: We will repair or replace defective units at no charge.
B. Statutory Rights for EU/UK Customers (EU Compliance)
If you are a consumer residing in the European Union or the UK purchasing from our global site:
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Statutory Guarantee: You are entitled to a 24-month statutory guarantee for conformity defects present at the time of delivery, in accordance with EU consumer protection laws.
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Relation: The Standard Limited Warranty (Section 1.A) applies in addition to, and does not replace, your statutory rights.
C. Warranty Exclusions (Applies to ALL Regions)
Warranty coverage is VOID if the damage is caused by:
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Misuse: Incorrect installation, reverse polarity, or exceeding voltage limits.
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Unauthorized Modification: This explicitly includes soldering, cutting pins, modifying the PCB, or flashing unauthorized/beta firmware that "bricks" the device.
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Physical Damage: Drops, moisture/water damage, or electrical surges (lightning).
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Normal Wear & Tear: Consumable parts (e.g., batteries), unless defective upon arrival.
Note: For non-warranty repairs (e.g., customer-induced damage), we may offer repair services for a fee. Shipping and diagnostic costs will be borne by the customer.
2. Return & Refund Policy
A. Return Window
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Standard: You may request a return within 31 days of receiving your order.
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EU Customers: You have the statutory right to withdraw from the contract within 14 days of receipt without giving a reason.
B. Refund Conditions & Restocking Fees
To protect against policy abuse, the refund amount is strictly determined by the condition of the returned item.
1. Full Refund (100%)
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The item is Brand New, Unopened, and Unused.
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The original packaging is intact and sealed.
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All accessories are present.
2. Partial Refund (Restocking Fee / Value Depreciation)
If the item is returned in a condition that prevents it from being sold as new, OpenELAB reserves the right to deduct a Restocking Fee (or "Compensation for Loss of Value" for EU customers) from the refund.
Deductions apply if:
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Signs of Use: Visible scratches, mounting marks on screw holes, or fingerprints.
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Damaged Packaging: Original box is torn, written on, or missing.
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Technical Modification: The device has been powered on, programmed/flashed, or soldered.
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Broken Seals: Anti-static bags or security seals have been opened.
Depending on the severity of the usage/damage, the deduction may range from 15% to 50% of the product price. Items damaged beyond repair due to misuse will not be refunded.
C. Shipping Costs
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Defective / Wrong Item: OpenELAB covers the return shipping cost.
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Customer Remorse (Changed Mind / Ordered Wrong Item): The customer is responsible for all return shipping costs to our designated return center (located in the US, Germany, or China, depending on your region). Original shipping fees are non-refundable unless required by local law.
3. Return Process (RMA)
To ensure a smooth return process, please follow these steps:
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Authorization: Contact us at info@openelab.io before returning any item. Returns without prior authorization will not be accepted.
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RMA Number: We will provide you with a Return Merchandise Authorization (RMA) number and the correct return address.
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Packing: Ship the item back in its original packaging with the RMA number clearly marked on the shipping label (not on the product box).
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Tracking: We strongly recommend using a trackable shipping method. OpenELAB is not responsible for returns lost in transit.
