Circularity Testing
Evaluate true circular motion accuracy across your CNC machine's working envelope to establish baseline performance and detect deviation from ideal circular paths that impact part quality.
Sarkinen Calibrating delivers precision ballbar testing using Renishaw's QC20-W Ballbar to quickly evaluate your CNC machine's circular accuracy and identify critical wear issues. Our wireless ballbar system minimizes production downtime while providing NIST-traceable results that validate service work, troubleshoot accuracy problems, and support maintenance planning for Portland and SW Washington manufacturing operations.
Comprehensive CNC machine performance testing using Renishaw's wireless ballbar system to identify wear, validate repairs, and maintain accuracy.
Evaluate true circular motion accuracy across your CNC machine's working envelope to establish baseline performance and detect deviation from ideal circular paths that impact part quality.
Identify mechanical wear and lost motion in drive systems that cause positioning errors, allowing proactive maintenance before accuracy issues affect production output and scrap rates increase.
Assess servo matching and response characteristics between axes to detect tuning issues, response delays, or control problems that compromise synchronized multi-axis motion and surface finish quality.
Measure stick-slip behavior and reversal spikes during direction changes to identify guideway condition, lubrication problems, or mechanical binding that creates inconsistent motion and unpredictable accuracy.
Verify perpendicularity between machine axes to ensure proper geometric alignment, preventing angular errors that accumulate across part features and cause dimensional problems in finished components.
Confirm effectiveness of recent maintenance, repairs, or adjustments by comparing before-and-after ballbar results, providing objective evidence that service work resolved identified accuracy issues and restored machine capability.
Pre-Test Machine Assessment
We begin by reviewing your machine's service history, recent performance concerns, and production requirements. This consultation helps us understand your specific accuracy needs and any known issues affecting operations in your Portland or SW Washington facility.
Wireless Ballbar Setup
Multi-Plane Circular Testing
Data Analysis and Diagnosis
Results Delivery and Recommendations
Discover how Portland and SW Washington manufacturers rely on our ballbar testing for accuracy assurance and downtime prevention.
"As plant manager at Triad, I am always looking for ways of testing and measuring the condition of our large machines. Our outside repair tech suggested that I have Sarkinen Calibrating run their Ball Bar Test on all of our machines to show if we had any critical wear issues..."
"I have worked with Mr Sarkinen on a job in Portland He is a Highly Skilled, Knowledgable Professional. I would definitely recomend him for all your Machine Tool Calibration Metrics. Sincerely Curtis Page Naughtellis CNC Service"
"This guy knows his stuff. Would definately recommend! Friendly good people!"
"As plant manager at Triad, I am always looking for ways of testing and measuring the condition of our large machines. Our outside repair tech suggested that I have Sarkinen Calibrating run their Ball Bar Test on all of our machines to show if we had any critical wear issues..."
"I have worked with Mr Sarkinen on a job in Portland He is a Highly Skilled, Knowledgable Professional. I would definitely recomend him for all your Machine Tool Calibration Metrics. Sincerely Curtis Page Naughtellis CNC Service"
"This guy knows his stuff. Would definately recommend! Friendly good people!"
"As plant manager at Triad, I am always looking for ways of testing and measuring the condition of our large machines. Our outside repair tech suggested that I have Sarkinen Calibrating run their Ball Bar Test on all of our machines to show if we had any critical wear issues..."
"I have worked with Mr Sarkinen on a job in Portland He is a Highly Skilled, Knowledgable Professional. I would definitely recomend him for all your Machine Tool Calibration Metrics. Sincerely Curtis Page Naughtellis CNC Service"
"This guy knows his stuff. Would definately recommend! Friendly good people!"
Local precision calibration expertise delivering faster service and comprehensive solutions for Portland and SW Washington manufacturing operations.
Serving Portland OR and SW Washington with faster response times than out-of-area providers, minimizing your downtime.
All measurements traceable to NIST and International Standards, providing audit-ready documentation and regulatory compliance confidence.
Founded by a former machine operator who understands production realities, delivering solutions focused on efficiency and quality.
Renishaw QC20-W wireless ballbar enables rapid setup with minimal machine disruption, reducing testing time and production impact.
Experience from the shop floor to precision measurement.
Founder
Larry's journey into precision calibration began on the shop floor as a machine operator, giving him firsthand experience with the production challenges manufacturers face daily. This unique perspective shaped his approach to calibration—it's never been just about testing equipment, but about understanding how machine accuracy directly impacts production quality, efficiency, and profitability. Before founding Sarkinen Calibrating, Larry saw how unexpected machine problems disrupted schedules, increased scrap rates, and frustrated production teams. He built the company to provide solutions that go beyond basic maintenance, focusing on predictive testing and proactive accuracy verification. Larry's operator background means he approaches every calibration project with an understanding of tight deadlines, quality pressures, and the real cost of downtime. He knows manufacturers need reliable results delivered quickly with minimal disruption. This practical perspective drives Sarkinen Calibrating's commitment to fast response times, clear communication, and actionable recommendations that help Portland and SW Washington manufacturers maintain predictable operations and deliver consistent quality to their customers.
What is the cost of ballbar testing?
Ballbar testing cost varies based on machine size, number of axes tested, and testing locations required. Contact Sarkinen Calibrating for a detailed quote specific to your CNC machine and testing requirements. We provide transparent pricing and fast turnaround for Portland and SW Washington facilities.
How long does ballbar calibration testing take?
How often should I perform ballbar testing on my CNC machines?
What machine problems can ballbar testing identify?
Is ballbar testing required for ISO certification or quality audits?
Can ballbar testing validate recent machine service or repairs?
Do you provide ballbar testing for multi-axis and 5-axis machines?
What documentation do I receive after ballbar calibration?
Our calibration experts are ready to discuss your specific machine accuracy needs and testing requirements.
Providing faster ballbar calibration response times throughout Portland OR and SW Washington with capabilities for out-of-area service.
Portland & SW WA
Primary Coverage
5.0 Stars
Customer Rating
Minimal Downtime
Service Focus
Contact us to confirm service availability and schedule your ballbar calibration test today.
All calibrations traceable to national standards
Using industry-leading Renishaw QC20-W wireless ballbar
Trusted by Portland and SW Washington manufacturers
Contact Sarkinen Calibrating to schedule ballbar testing or discuss your machine performance concerns. We'll respond quickly with pricing, scheduling options, and answers to your calibration questions.
For immediate assistance, feel free to give us a direct call at (360) 907-3058 You can also send us a quick email at
For immediate assistance, feel free to give us a direct call at (360) 907-3058 You can also send us a quick email at