Total Air Tool Services provides service, repair and UKAS ISO-17025 accredited calibration for DC electric assembly tools, transducerised tooling and current control systems across the UK. We are the sole UK distributor for Delta Regis electric assembly tools and a premier Atlas Copco distributor covering the Midlands and Southwest. We service and repair all major brands from our 3,500 sq ft depot in Kenilworth, with a 48-hour express turnaround available for production-critical breakdowns.

DC Electric Tooling, What Sets It Apart From Pneumatic

DC electric assembly tools, nutrunners, screwdrivers and their controllers, operate on different principles to pneumatic tools and have correspondingly different service and calibration requirements.

A pneumatic tool delivers torque through air pressure and mechanical components. A DC transducerised tool measures torque directly via a transducer built into the tool head, converts that signal to a digital reading based on a stored calibration factor, and cuts off drive when the programmed target is reached. Current control tools achieve the same outcome through motor current monitoring rather than a dedicated transducer.

Both approaches deliver fastening precision that pneumatic tooling cannot match, and both require periodic recalibration to maintain that precision. The transducer calibration factor drifts as components age, brushes wear and mechanical clearances develop. The current control system's relationship between motor current and output torque shifts as motor characteristics change. In either case, the tool continues to operate and signal completion, the torque delivered to the fastener is what changes, silently.

That is why service and calibration for DC tooling is not optional housekeeping. It is a quality control requirement.

DC and Electric Tooling Brands We Service

We are the sole UK distributor for Delta Regis electric assembly tools and an approved service centre for Atlas Copco. Our engineers are trained and competent across all major DC and electric tooling brands used in UK manufacturing.

Atlas Copco

Tensor ES, SR, ST, STR, SL series (cabled DC) and IxB cordless transducerised range. Power Focus 6000, Power Focus 8 and Power Focus XC controllers. PowerMACS 4000 multi-spindle systems. View Atlas Copco tools we supply.

Delta Regis

Electric screwdrivers and DC torque control tools across the full range. As sole UK distributor, we hold UK stock and have direct manufacturer access for parts and technical support. View Delta Regis electric assembly tools.

Kolver

Electric screwdrivers and torque control systems for light-torque precision assembly.

Delvo / Nitto Kohki

DC electric screwdrivers and assembly tools for electronics and PCB assembly applications.

Ingersoll Rand

QX series transducerised cordless tools and DC electric fastening systems.

Desoutter

CVi2, CVi3 and CViC cabled systems and battery-powered tools.

Cleco

DC electric assembly tools and associated controllers.

If your brand is not listed, contact us. Our engineers have broad DC tooling experience and can assess unfamiliar systems.

Service and Preventive Maintenance

What a DC tool service involves

A full service on a DC electric assembly tool covers mechanical and electrical inspection, strip-down of the gear train and motor assembly, replacement of worn components, brushes, seals, bearings, lubrication to manufacturer specification, reassembly and functional testing. Post-service torque verification is carried out on every DC tool before it leaves us.

Recommended service intervals

Manufacturer-recommended major overhaul for DC tooling in continuous production falls every 1,000–1,500 operating hours, typically every 12–18 months. Tools used on high-cycle applications or in harsh environments may require shorter intervals. We can build a Reliability Centred Maintenance (RCM) schedule around actual runtime data from your tool fleet rather than a fixed calendar interval, which for high-cycle tools makes a measurable difference to both service cost and unplanned downtime. View all services and maintenance programmes.

Controller service and setup

Controllers, Power Focus, Fiam MCA, Delta Regis controllers and others, are serviced alongside the tool where relevant. Firmware versions are checked, parameter sets are documented before service and restored after, and the tool-controller combination is verified as a system before return.

Repair

Fault diagnosis and quotation

When a DC or electric tool arrives at our depot, our engineers carry out a full strip-down diagnosis. A free written quote is issued within 24 hours of the tool arriving. No repair begins until you confirm the quote.

For production-critical breakdowns, a 48-hour express repair option is available, call 01926 857193 to confirm availability before sending the tool.

Repair process

Repair work is carried out using genuine manufacturer parts wherever available. For Delta Regis tools, we hold UK stock directly as sole distributor. For Atlas Copco tools, we have approved service centre access to OEM parts. For other brands, we source genuine parts through our manufacturer relationships.

Every repaired DC tool undergoes post-repair torque verification before return. The repair is documented and a 3-month parts and labour warranty covers all work carried out.

UKAS Calibration for DC and Electric Tools

Torque calibration for DC and electric assembly tools is carried out in our UKAS ISO-17025 accredited laboratory. Every certificate issued carries traceability to the National Physical Laboratory (NPL) and is accepted under ISO 9001, IATF 16949 and AS9100 without qualification.

What DC tool calibration involves

The tool is verified at multiple torque points across its programmed range using calibrated torque transducers referenced to our UKAS-accredited equipment. For transducerised tools, the stored calibration factor is assessed and adjusted where required. For current control tools, the relationship between motor current and output torque is verified against reference measurements. The controller output is assessed alongside the mechanical delivery where the tool and controller are calibrated as a system.

Certificates are issued per tool, with the tool identification, date of calibration, measured values, calibration equipment reference and traceability, and next calibration due date recorded on each.

On-site calibration

On-site calibration is available for facilities where removing production tools is impractical or where line-integrated tools cannot be shipped without stoppage. Our engineers bring calibrated reference equipment and issue certificates on the day. Contact us with your fleet details and site location for a fixed-price quote.



View our full tool calibration and certification service, all tool types.