At Southwestern PTS, we design, build, and integrate custom multi-spindle fastening systems for manufacturers across Texas and nationwide. From low-torque applications with two spindles to high-torque systems with ten or more, we deliver turnkey solutions engineered around your part and process.
Our Multi-Spindle Fastening Projects
We custom-engineered this semi-automated 10 spindle lug secure system that drastically reduced the time required to tighten all the bolts.
We partnered with Estic to design, build, and deliver a multi-spindle semi-automated fastening system that tightens both the lower ball joints and castlenut in one process.
We built and integrated this custom 4 spindle system for U-Bolt assembly; one of the most challenging tightening processes known.
Impact on Production
Decreased Cycle Time
The greatest benefit of multi-spindle fastening is a significantly reduced cycle time. Instead of tightening one fastener at a time, the entire fastening pattern is completed in a single cycle. In high-volume applications, this can significantly increase throughput and reduce the labor required to support the process. Cycle time decreases, and throughput capabilities increase.
Extensive Traceability and Quality Control
Every multi-spindle system we integrate is built around smart tooling capable of data traceability. These systems provide real-time feedback, immediately notifying operators of fastening issues before nonconforming parts move downstream in the production process. Depending on the application requirements, data ranging from OK/NOK results to full torque and angle data can be recorded for every fastener, supporting quality control and audit documentation.
Ergonomic Improvements
Multi-spindle systems improve ergonomics by managing torque reaction and improving accessibility. Reaction arms and torque tubes absorb reaction forces that would otherwise be transferred to the operator, while mounted multi-spindle heads can be positioned to eliminate awkward reaches and excessive bending commonly associated with manual fastening operations.
Our Design, Build, Integrate Approach
Our design phase revolves around close collaboration with our customers. Firstly we make sure we fully understand their process and the specifics of their application. Torque, cycle time, part presentation, footprint, and controls requirements are all understood. From there, we design a custom multi-spindle fastening system that will meet their requirements.
Design
Our build phase is centered around preparing the system for deployment. We coordinate the fabrication and assembly activities required to bring the project together, working closely with trusted manufacturing partners. We manage the build process from start to finish to ensure that the multi spindle fastening systems are constructed to the specifications established during the design phase.
Build
The integration phase is critical to get right. Our dedicated team of engineers works with the customer as well as the tool manufacturer to ensure that the system is set up and working properly. We make sure that the bolts are fastening within spec, cycle times are as agreed upon, it is operating with the customer’s MES system, and data is being recorded.
Integrate
FAQ
1. What does Southwestern PTS do for a multi-spindle fastening project?
Southwestern PTS designs, builds, and integrates custom multi-spindle fastening systems for manufacturers across Texas and nationwide. We manage the entire process—from understanding your part and fastening requirements to engineering, fabrication, integration, and ongoing support. The result is a turnkey fastening system engineered specifically for your application.
2. Where does Southwestern PTS provide multi-spindle fastening integration services?
Southwestern PTS is based in the Dallas-Fort Worth area and provides custom multi-spindle fastening system integration services for manufacturers throughout Texas and across the United States.
3. Are multi-spindle fastening systems custom built or off-the-shelf?
Multi-spindle fastening systems are typically custom engineered for each application. Because every assembly has unique fastener patterns, torque requirements, and production objectives, there is rarely an off-the-shelf solution. Southwestern PTS designs and builds each system around the specific requirements of the customer's part and process.
4. Why are multi-spindle fastening systems used in manufacturing?
Multi-spindle fastening systems allow manufacturers to tighten multiple fasteners simultaneously rather than one at a time. This reduces cycle time, increases throughput, and minimizes the joint relaxation that can occur during sequential tightening, contributing to more consistent clamp load distribution across the assembly.
5. What components make up a multi-spindle fastening system?
A multi-spindle fastening system typically consists of smart fastening tools, reaction devices such as torque tubes or reaction arms, and a fixtured or adjustable spindle plate that positions the spindles relative to the fastening pattern. Depending on the application requirements, systems can also incorporate controllers, traceability software, part presence verification, and other error-proofing technologies.
Get in Contact
If you’d like to explore how a multi-spindle fastening system can improve your assembly process, or discuss your specific application with one of our engineers, reach out and we’ll be in touch to schedule a meeting. We provide full automation integration services across Texas and nationwide.