What to Look For When Buying Used Robots
Buying used industrial robots can save 40-70% compared to new equipment, but it requires careful evaluation. Here's what experienced buyers check:
Physical Condition
- Check for dents, cracks, or damage to the arm
- Inspect cable condition and dress pack wear
- Look for oil leaks or excessive grease
- Verify all axis movements are smooth
Electrical & Controls
- Controller powers on without errors
- Teach pendant screen and buttons work
- All safety circuits function properly
- Backup battery has been maintained
Documentation
- Original manuals or documentation
- Maintenance records if available
- Software licenses and backups
- Calibration data and mastering info
Testing
- Request video of robot running
- Test all axes through full range
- Check repeatability at key positions
- Verify any included tooling works
Key Specifications to Consider
Understanding these specifications will help you match a robot to your application:
Payload Capacity
Maximum weight the robot can handle at full reach. Always allow 20-30% margin for end-effector weight.
Reach
Maximum distance from the robot base to the tool center point. Determines your work envelope.
Axes (DOF)
Number of joints/axes. 6-axis is standard for most applications. 7+ for complex access.
Repeatability
How precisely the robot returns to the same position. Critical for precision work.
Cycle Hours
Total operating hours on the robot. Similar to odometer on a vehicle.
Controller Generation
The robot's brain. Newer controllers offer better features and easier programming.
Questions to Ask the Seller
Don't be afraid to ask detailed questions. Reputable sellers will be transparent about equipment history and condition.
History & Usage
- •What application was the robot used for?
- •How many cycle hours are on the robot?
- •When was it last in production?
- •Why is it being sold?
Condition & Maintenance
- •Has it been refurbished or maintained recently?
- •Are there any known issues or error codes?
- •What's the condition of the cables and dress pack?
- •Has the battery backup been replaced recently?
Included Components
- •Is the controller included?
- •Is the teach pendant included and functional?
- •Are manuals and software licenses included?
- •Are any special end-effectors or tooling included?
Testing & Warranty
- •Can I see a video of the robot running?
- •Can the robot be tested before purchase?
- •What warranty is offered?
- •What's your return policy?
Top Industrial Robot Brands Compared
Each major brand has its strengths. Here's how the top four compare:
FANUC(Japan)
Strengths
- Industry-leading reliability
- Extensive service network
- Wide model range
Popular Series
R-2000, M-20, LR Mate, ARC Mate
Controllers
R-30iB Plus, R-30iB, R-30iA
Best for: High-volume manufacturing, automotive, reliability-focused applications
ABB(Switzerland)
Strengths
- Excellent motion control
- Strong software ecosystem
- Good for complex paths
Popular Series
IRB 6700, IRB 4600, IRB 2600, IRB 1200
Controllers
OmniCore, IRC5
Best for: Arc welding, painting, assembly, palletizing
KUKA(Germany)
Strengths
- High payload options
- Excellent for automotive
- Strong European support
Popular Series
KR QUANTEC, KR CYBERTECH, KR AGILUS
Controllers
KR C5, KR C4
Best for: Automotive, heavy payloads, spot welding
Yaskawa Motoman(Japan)
Strengths
- Competitive pricing
- Good welding performance
- Reliable servo systems
Popular Series
GP series, AR series, HC series
Controllers
YRC1000, DX200
Best for: Arc welding, handling, cost-effective solutions
Warranty and Support Considerations
What to Expect from Used Robot Warranties
- 30-90 day warranties are common for used robots from reputable dealers
- Refurbished units often come with longer warranties (6-12 months)
- "As-is" sales have no warranty - price should reflect this risk
Support Considerations
- Check availability of spare parts for the model
- Verify software support for the controller generation
- Consider integrator availability in your area
- Ask if training or installation support is available
Ready to Find Your Robot?
Browse our current inventory of quality used industrial robots from top brands like FANUC, ABB, KUKA, and Yaskawa. All equipment is inspected and tested.