Technical services

kiln Services

We can repair or replace rotary tires and the many related components.

All service work meets or exceeds OEM standards. Our available services range from on-site inspections and assessments to field installation and calibration.

Grinding & Resurfacing

Wear profiles on the faces of tires and trunnions create conditions that cannot correct themselves. Uneven contact surfaces (concave, convex, or taper) can make it difficult to control the thrust of the kiln, which in turn leads to a slew of other problems. NAK offers onsite machining and grinding services for tires, rollers, and thrust rollers. Tires can be machined up to a speed of 3.5 rpm tires and 5 rpm for rollers. Our technicians remove the deepest pitting and concave/convex profiles using patented mobile machining and grinding technology. Unlike many of our competitors, we offer fixed pricing for our grinding services.

Start-up Services

Following the replacement of a roller or gear, a kiln technician should be present for the heat up of the kiln. These technicians monitor the kiln for any high thrust, hot bearings, or unexpected issues. NAK can supply a technician(s) to oversee your next kiln startup at request.

Kiln Alignment & Mechanical Audit

Rotary Kilns are subject to many static and dynamic stresses that are sometimes due to underlying mechanical or thermodynamic problems. A kiln alignment will address these issues and optimize the longevity of constituting elements in the system while resetting the kiln to OEM parameters.

Hot kiln alignments are performed when the kiln is running. Cold alignments are performed when the kiln is shut down.

The effect of an unexpected shutdown or component failure could be devastating financially and mechanically. NAK’s offered alignment services save our customers from unexpected downtime & more. These surveys are also a helpful tool when planning for future shutdowns. A formal report will be sent to the customer following the procedure that records all results and recommendations and provides a timeline of when critical repairs need to be performed.

Shell Profile Analysis

NAK offers Shell Profile Analysis to evaluate the condition and integrity of the steel shell throughout the length of the kiln. Shell run-out is a major factor affecting shell life, making it important to monitor changes over time and identify areas that may impact nearby components.

Utilizing advanced technology, NAK can present the analysis in a detailed 3D video representation, as shown, providing a clear visualization of shell conditions and potential problem areas. Our Shell Profile Analysis includes recommendations for future shell replacements and additional findings related to the kiln shell, helping extend equipment life and minimize downtime.