Stäubli MPS 631 Customized Tool Changer Review: Specs, Price and Applications
The Stäubli MPS 631 Customized is an engineered automatic tool changer for payloads up to 630 kg, offered as MPS 631 and higher-moment MPS 631S.
Static moment is 3,200 Nm (631S: 5,000 Nm) and dynamic 11,200 Nm (631S: 17,500 Nm), with 0.01 mm repeatability, 100 mm coupled height and 5 to 10 module places. Base units, transmission modules and deposit stations are configured to the process.
Quick Verdict
Maximum flexibility for heavy-payload robots that need many media lines.
Stäubli MPS 631 Customized Tool Changer at a Glance
Specification | Details |
Product type | Automatic robotic tool changer |
Family | MPS CUSTOMIZED |
Max. payload | 630 kg |
Max. static moment | 3,200 Nm (631S: 5,000 Nm) |
Max. dynamic moment | 11,200 Nm (631S: 17,500 Nm) |
Locking | Pneumatic ball locking, 0.45 – 1.2 MPa |
Repeatability | 0.01 mm |
Height (coupled) | 100 mm |
Robot flange | ISO 9409-1-160-11-M10 / M12 |
Module places | 5 to 10 |
Price | Request a quote |
Design and Operating Principle
An automatic tool changer splits into a robot-side master plate and a tool-side plate. A pneumatic locking mechanism, here ball locking, clamps the two together, while transmission modules pass air, vacuum, coolant, signals and power across the joint so one robot can run many tools.
Stäubli's MPS line comes in three families: MPS COMPLETE, pre-configured units for standard jobs; MPS MODULAR, where the buyer chooses coupling technology and transmission module positions; and MPS CUSTOMIZED, engineered units for very large payloads and many modules.
Static moment rates the load the coupling holds at rest, while dynamic moment covers acceleration and braking during fast robot motion. Size the changer on the dynamic value with the tool's centre of gravity offset included.
Integration and Selection
Match the robot adapter to the flange standard listed, then pick transmission modules for every medium the tools need: air, vacuum, coolant, signals, power and data.
Plan tool stands, tool identification and locking sensing in the robot program so a change cannot start unless the tool is seated and locked.
Check the coupled height against reach and tool clearance, and size the air supply to the locking pressure range.
Industry Applications
Industry | Typical use |
Automotive | Heavy body-shop tooling |
Heavy equipment | Large fixtures |
Aerospace | Structural part handling |
Rail | Large component handling |
Functional Uses
Heavy tool exchange
Custom media transfer
Deposit station integration
Pros and Cons
Advantages
630 kg capacity
Custom engineering
S version for high moments
Limitations
Engineered lead time
Large footprint
Who Should Consider the Stäubli MPS 631 Customized Tool Changer?
Automotive plants, integrators and manufacturers that run several tools on one robot and need a changer rated to 630 kg.
Price and Availability
Price: Request a quote. Stäubli prices the MPS 631 by base unit, transmission modules, adapter plates and tool stands.
Further Reading
Stäubli MPS 631 Customized Tool Changer FAQ
What payload does the MPS 631 handle?
Up to 630 kg.
What repeatability does it offer?
0.01 mm.
What media can it transfer?
Pneumatics, vacuum, cooling, signal and power supply and primary current through transmission modules.
How does it lock?
Pneumatic ball locking at 0.45 to 1.2 MPa.
How much does it cost?
Pricing depends on configuration; request a quote from Stäubli.
