Gear Manufacturing, Gearbox Repair & Pumping Unit Services
From our Oklahoma City facility, American Ram provides gear manufacturing, gearbox repair and full-service pumping unit support for the Mid-Continent oilfield and multi-industry applications.
Multi-Industry Gear Manufacturing
Herringbone Gears & Helical Gears
Our primary specialty for high-load applications.
Spur & Worm Gears
Precision made for diverse drive systems.
Pumping Unit Gears
Replacements for 50+ major brands.
Oilfield & Beyond
Gears for mud pumps, drawworks, frac/SWD and industrial applications.
Custom Gear Manufacturing
Custom and one-off gears: reverse engineering and special geometries.
Pumping Unit Machine Shop
- Full-Service Support: Repair, rebuild, refurbish, parts
- Component Machining: Custom and OEM-compatible parts
Pumping Unit Parts & Bearings: Saddles, Tails & Wrist Pins
Pumping unit parts, bearings and wear parts for beam pumping units from our Oklahoma City machine shop.
- Saddles: saddle bearings for the walking beam
- Tails: tail bearings (equalizer bearings)
- Wrist Pins: wrist pins and wrist pin bearings; tell us your wrist pin size when you request a quote
- Other Bearings: railroad bearings and PTFE bearings
Machine Shop Capabilities & General Machine Work
- General Machine Work: general machine shop services alongside our pumping unit and gear work
- Grinding: grinding services from our Oklahoma City machine shop
- Quality Rebuilds: Precision workmanship you can trust
- Local Turnaround: OKC facility for Mid-Continent operators
- Field-Ready Solutions: Keep your beam pumping units running
Pumping Unit & Pump Jack Repair: We Rebuild Pumping Units
- Complete pumping unit repair for API pumping units
- We rebuild pumping units, ready to load out (see a rebuilt C160D)
Pumping Units for Sale: Rebuilt & Used Pump Jacks
- Looking for a pumping unit for sale? We offer rebuilt API pumping units, rebuilt pump jacks and used pump jacks; pick up in Oklahoma City or we can arrange delivery
- Brake lining for all types and brands of pumping units
Walking Beam Straightening
- Walking beam straightening and re-alignment, such as Lufkin M912 beams (see photos)
Complete Gearbox Repair
From a size 6 to a 1280, American-built or imported from China, decades old or fresh off the line, we bring gearboxes back to work-ready condition. Our team has deep experience with American, Lufkin, Bethlehem, National and Parkersburg units, and whether the job calls for a precise refurbishment or a complete ground-up rebuild, every gearbox goes back together with nothing but top-quality bearings and seals. All rebuilds completed to get you back up and running as quick as possible.
Gearbox repair and replacement gearing, including herringbone and helical gears and pinions, from our Oklahoma City gear shop.
We specialize in pump unit gearboxes of any size, and we also service a wide range of other gearboxes, including industrial models.
Electronic Inspection of Pumping Units
When we inspect a pumping unit, we go over it thoroughly and document everything we find, so you can see what we see and decide what needs to be done.
- 131-point inspection, including opening the wrist pin housings and the gearbox
- Photos of the bearings, gearbox and any issues as we find them
- Reports and photos uploaded online for you to review
- Greasing of structural bearings, bolt tightening and grease zerk replacement
Catching a wrist pin or gearbox problem early can save thousands in repairs and keep a one-day fix from turning into weeks of lost production. Request an inspection quote or call or text 405-882-1801.
Featured Products









Discounts available on multiples. Pick up in Oklahoma City or we can arrange delivery. See our recent work or contact us.
Request a Quote