Don’t let a faulty mud pump halt your oil rig’s production. Geartec’s knowledge and experience will keep you up and running.

You can’t get the job done if your mud pump goes down. At Geartec, we’ve got you covered with mud pump gear and jackshaft manufacturing and gear repair services that are designed to bring critical components such as the bull gear and jackshaft back to life for long-term performance. Say goodbye to unplanned equipment outages due to improper maintenance, excessive wear issues and expensive downtime. Give us a call, and keep your mud pump oil rig up and running.



No one can afford hours of rig downtime. When a mud pump goes down, the culprit is often the jackshaft or bull gear which can be identified by a proper mud pump inspection. Since many of these components are housed in the pump’s enclosed drive system, service experience matters. Issues may arise due to improper equipment maintenance of internal components or gradual wear. Geartec’s team, with decades of experience in the oil and gas industry, understands the harsh and stressful conditions you encounter on a daily basis – and can provide a solution that keeps your equipment running smoothly.
Gearbox after repair
  • logoREPAIRS:
  • Whether you require rush or standard repairs, we have you covered. We recognize the importance of keeping your equipment operational in the oil and gas industry.
  • logoREBUILDS:
  • Our team of engineers can swiftly troubleshoot a mud pump bull gear and jackshaft issue and determine the most cost-effective solution.
  • In situations where spare parts are no longer available, our reverse engineering capabilities come into play. We analyze each part, create a precise replacement, and can even offer improvements to ensure optimal performance. This means we can scratch-build a replacement gear or shaft to get your pump up and running again.
  • logoSPARE PARTS:
  • To minimize downtime and save you time and effort, we recommend keeping critical parts on-hand for quick repairs. This proactive approach can help you avoid the cost of failure and maintain the operational efficiency of your mud pump on a regular basis.


Large gear being milled on a room-sized CNC machine.
Getting your oil rig mud pump gears, shafts and gearboxes operational comes down to experience. With over 200+ years of combined gearbox knowledge in the oil and gas industry, GearTec, owned by United Stars Inc., is the trusted choice. Our team of industry experts understands the critical importance of this equipment to oil and gas production.
At GearTec, we are committed to delivering top-notch solutions and customer satisfaction. Every part we replace or scratch-built component we create reflects our dedication to excellence. With our expertise in reverse engineering and precise measurements, we craft high-quality gears tailored to your specific needs and specifications. Through meticulous deconstruction, analysis of each element, and continuous improvements, we excel in the reverse engineering process, consistently delivering superior gearing solutions.
Quality is our hallmark. As an ISO 9001:2015 certified company, GearTec adheres to stringent standards, guaranteeing that all gears are manufactured to the highest quality. Our focus on quality restoration and repair not only saves you time and money in the long term but also minimizes repair costs and gets you performance improvements.


  • How often should I have my mud pump inspected and maintained?
  • Your manufacturer likely has a recommended service schedule. In addition to daily inspections to check for unusual wear, vibrations or other issues, it’s important to have your mud pump professionally serviced at least every 500 hours. Some manufacturers also recommend an additional annual overhaul, including a replacement of worn components, calibration and gear check. Look out for audible signs or unusual performances. Make sure to do proper equipment maintenance to avoid expensive maintenance issues.
  • What types of mud pump gearbox repairs does your company offer?
  • We offer full-service mud pump gearbox repairs, rebuilds and maintenance. These services include component replacement and reverse engineering of parts to meet the original specs.
  • Does Geartec offer field service for mud pump maintenance and repair?
  • No, GearTec specializes in mud pump gearbox repair and rebuild services at our well-equipped facility. While we offer convenient pickup arrangements for your gearbox and ensure its thorough evaluation and repair, we do not provide on-site field service. Our focus is on delivering top-notch rebuild solutions in a controlled environment to guarantee the highest quality standards and optimal performance of your gearbox upon its return.
  • What is involved in a mud pump gearbox rebuild, and how long does it typically take?
  • GearTec offers a comprehensive mud pump gearbox rebuild service, which begins with convenient pickup arrangements for your gearbox. Upon receipt, our skilled technicians thoroughly clean and disassemble the gearbox, preparing the gears and shafts for meticulous mag-particle inspections. After evaluating all rotating components and gearbox housing, GearTec provides a detailed analysis of our findings, along with a comprehensive gearbox failure report. Additionally, you will receive a transparent quotation that includes the estimated lead-time to restore your gearbox to optimal functionality, ensuring it can swiftly return to the field.
  • Can you provide reverse engineering services for mud pump gearbox components that are no longer manufactured?
  • Yes, we will provide reverse engineering services.
  • Do you offer spare parts for all types of mud pumps, or only certain brands?
  • We work on all major oil and gas OEM gears and gearboxes. Because we can reverse engineer most mud pump gearbox parts, we’re not limited by manufacturer type or brand.
  • What is the warranty on your mud pump repair and rebuild services?
  • Our mud pump repair and rebuild services come with a warranty of 2 years.
  • How can I request a quote for mud pump gearbox maintenance or repair services?
  • Either give us a call at 440-953-3900 or fill out our online form. We’ll get back to you in less than 24 hours.