Genmitsu 4040-PRO Desktop CNC Milling Machine for Engraving and Cutting
📦 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.
Genmitsu 4040-PRO Desktop CNC Milling Machine for Engraving and Cutting
🌀 Genmitsu 4th Axis Rotary Module – True 4-Axis Support for Your CNC Machine
🚀 Take your CNC machining to the next level with the Genmitsu Rotary Upgrade! This powerful module adds an A-axis to your machine, enabling true 4-axis operation—perfect for complex 3D geometries, precise contours, and multi-sided machining.
🔧 Key Features
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🔄 True Rotation, Not Simulation Precise rotary control for demanding engraving and carving projects.
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🧩 Complex Shapes Made Simple Ideal for intricate 3D carving, round engraving, and prototyping.
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🎯 Professional Precision Delivers smooth, accurate results—perfect for advanced CNC applications.
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🛠️ Plug-and-Play Upgrade Compatible with Genmitsu 4040-PRO and other supported models.
🌟 Designed for Creative CNC Projects
Whether you're modeling, engraving, or prototyping, this rotary module unlocks a new dimension of control and design freedom.
⏱️ 15-Minute Frame Assembly
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🛠️ Quick & Hassle-Free Setup Preassembled components reduce setup time to just 15 minutes. Thoughtful slot patterns and precision alignment pins ensure perfect positioning—eliminating fit issues and making assembly smooth and foolproof, even for first-time users.
🧱 Steel-HSS Frame Construction
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⚙️ Precision Engineering for Stable, Accurate Performance Each axis features dual HSS steel linear rods paired with trapezoidal lead screw drives for smooth, reliable motion. The dual Y-axis configuration enhances rigidity and precision, outperforming traditional belt-driven systems.
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📏 Extended Z-Axis Travel Gain an extra 20mm of vertical clearance for more flexibility in vertical machining.
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🔩 Built for Precision Engineered for consistent, high-accuracy results across all axes.
📐 Generous Work Area
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🪵 Spacious 15.7" × 15.7" × 3.31" Work Area Handles everything from delicate carvings to larger woodworking tasks with ease. Ideal for:
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🧰 CNC beginners looking to grow
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🎨 Hobbyists crafting detailed personal projects
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🏪 Small businesses needing professional-grade performance for light commercial use
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🔩 Enhanced Z-Axis Flexibility
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📏 Modular Z-Axis Carriage with Multiple Mounting Holes Allows for larger spindles at elevated positions for increased clearance. The redesigned spindle swap system enables fast, tool-free changes while maintaining perfect perpendicular alignment for optimal cutting accuracy.
🧠 Advanced Control Board
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🔧 Redesigned for Expansion Broad accessory compatibility lets you easily adapt your CNC setup to evolving project needs:
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🔦 Supports laser engraving modules
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💨 Compatible with air-assist pumps for cleaner cuts
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📴 Works with offline controllers for wireless operation
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🎛️ Accepts MPG handwheels for manual precision control
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🔄 Enables 4th axis integration for advanced rotary machining
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🪚 Includes option for 65mm spindle mount for larger tools
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⚠️ Note: Accessories sold separately.
🎛️ Intuitive Jog Wheels
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🛠️ Smooth Manual Control Each stepper motor includes a jog wheel for easy spindle positioning and quick material adjustments—no tools needed. Optional dust shields protect lead screws from debris, ensuring long-term precision and durability.
See the 4040-PRO in action
📊 Technical Specifications
| Feature |  4040-RENO |
 4040-PRO |
 Andere 4040 |
| Assembly Time | 30 minutes | < 20 minutes | Varies |
| Frame Material | Full Aluminum | Full Aluminum | Aluminum & Acrylic |
| Max Speed | 2000 mm/min | 2000 mm/min | 2000 mm/min |
| Max RPM | 9000 | 9000 | 10000 |
| Accuracy | ±0.1mm | ±0.1mm | ±0.1mm |
| Drive System | Belt X,Y + Lead Screw Z | Lead Screw | Belt X,Y + Lead Screw Z |
| Laser Support | Yes | Yes | Yes |
| Semi-Assembled | No | Yes | No |
| Stepper Motor | NEMA17 42 | NEMA17 42 | NEMA17 |
| Work Area (mm/inches) | 400×400×76 / 15.75×15.75×3.07 | 400×400×78 / 15.75×15.75×3.1 | 400×380×55 / 15.7×15.0×2.2 |
| Machine Size (mm/inches) | 682×620×343 / 26.85×24.41×13.50 | 673×663×336 / 26.50×26.10×13.23 | Varies |
| Weight | 14.80kg / 32.6lb | 20.65kg / 45.5lb | Varies |
| Spindle Power | 75W Upgradable | 75W Upgradable | 60W |
| Spindle Mount | 42mm & 52mm | 42mm & 52mm | 42mm |
| Power Supply | 24V/4A | 24V/4A | 12V/5A |
| Limit Switches | Yes | Yes | Yes |
| Emergency Stop | Yes | Yes | Yes |
| Z Probe | LED | LED | Yes |
| Dust Shields | No | Available | Varies |
| Offline Controller | CTL4040 | CTL4040 | No |
| Handwheel Support | Yes | Yes | Varies |
| MPG Interface | Yes | Yes | Varies |
| Platform | MDF | MDF | MDF |
| 4th Axis Support | Yes | Yes | Varies |
| Driver Chip | TB67S109 | TB67S109 | Varies |
| Controller | GRBL | GRBL | GRBL |
| MCU | 32-bit | 32-bit | 32-bit |
📦 What's in the Box
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1× X-axis module
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1× Left & right Y-axis modules
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1× Z-axis module with pre-mounted spindle
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1× Z-axis cable holder
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1× Front module with alignment pins
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1× Rear module with alignment pins
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2× MDF platform boards
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1× Power supply
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1× USB cable
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1× USB stick
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3× 30° V-bit engraving bits
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1× Upgraded LED Z-probe kit
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4× Workpiece clamps
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2× ER11 collets (4mm & 3.175mm)
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2× Spare limit switches
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Screw & tool kit
Resource
Find more helpful articles in the SainSmart Resource Center 4040-PRO Resources
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 for Orders Inside U.S.
(For Products in the U.S. Warehouse, Shenzhen Warehouse)
2.1 Shipping options for an order value under $5 inside the U.S.
Shipping Options:
| Shipping Options | Continental U.S. | Non-Continental U.S. |
|---|---|---|
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USPS Ground Advantage |
$9.99 Arrive in 3-7 Business Days |
$9.99 Arrive in 5-9 Business Days |
|
UPS Express |
$15.99 Arrive in 2-4 Business Days |
$19.99 Arrive in 3-7 Business Days |
2.2 Shipping options for an order value between $5 and $50 inside the U.S.
Shipping Options:
| Shipping Options | Continental U.S. | Non-Continental U.S. |
|---|---|---|
|
USPS Ground Advantage |
$5.99 Arrive in 3-7 Business Days |
$7.99 Arrive in 5-9 Business Days |
|
UPS Express |
$12.99 Arrive in 2-4 Business Days |
$15.99 Arrive in 3-7 Business Days |
2.3 Free shipping options for an order value of above $50 inside the U.S.:
| Free Shipping Options | Continental U.S. | Non-Continental U.S. |
|---|---|---|
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USPS Ground Advantage |
Free above $50 | Free above $70 |
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UPS Express |
+ $ 9.99 for Above $50 | + $ 12.99 for Above $50 |
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 Shenzhen warehouse, we will ship them directly from Shenzhen, China.
- If you place an order for products from both the U.S. warehouse and the Shenzhen warehouse, we will ship your order separately: the products from the Shenzhen warehouse will be sent from Shenzhen, and the products from the U.S. warehouse will be sent from the U.S. warehouse.
3. International Warehouse
Our products are stored in both our U.S. and Shenzhen warehouses to provide more flexible logistics solutions tailored to different regions and customer needs. On each product's description page, we indicate the specific warehouse location to help you better plan your purchase and delivery schedule.
3.1 U.S. Warehouse
3.2 Chinese Warehouse
We will only arrange YunExpressexpress shipping from Shenzhen for orders with products in the Shenzhen warehouse worth more than €50. Orders directly shipped from our Shenzhen warehouse are handled by YunExpress. Given the complexities of international shipping, the estimated delivery time for these packages is around 10 business days, though this may vary slightly due to customs processes or other uncontrollable factors. Otherwise, the products will first be shipped from China to our U.S. warehouse and then shipped to the final destination.
4. Customs and Taxes
4.1 How are customs handled by OpenELAB for import or export?
We aim to minimize delays and ensure compliance, but OpenELAB does not guarantee exemption from U.S. customs charges.
4.2 Are U.S. sales taxes included when the Customer places an order?
If no sales tax is charged at the time of purchase, you may still be responsible for use tax according to your state’s tax laws. OpenELAB is committed to complying with the U.S. Supreme Court's decision in South Dakota v. Wayfair, Inc. and applicable local regulations.
4.3 Are there any other fees besides tax?
Please note that international shipments to the U.S. may occasionally incur customs clearance charges or carrier-imposed fees (e.g., by DHL, FedEx, or USPS). These charges are not controlled by OpenELAB and may vary based on the delivery carrier and U.S. import classification.
Effective Date: September 16th, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 30 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.com for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in the US.
- If a return is requested due to customer reasons (e.g., change of mind, incorrect order, etc.), both the original shipping cost and the return shipping cost will be deducted from the refund amount.
- For returns due to customer reasons, we will generate and provide a return shipping label.
Payment Platform Fees
For all refunds requested due to customer reasons, a standard service fee will be deducted from the refund amount, which is charged by the payment platforms. The specific fees are as follows:
Shopify Payments: 3.5% + $ 0.3
PayPal: 4.4%
