High quality and Robust Alternatives to a 3.5 HP Pneumatic Motor for On-Site Machining

Rédigé par Bruno Martin | Nov 6, 2025 10:10:45 AM

In on-site machining operations—beveling, facing, flange repair, deburring or grinding—pneumatic drive systems remain a benchmark: no electrical overheating, safe for explosive environments (ATEX), low maintenance, and reliable under harsh working conditions.

However, replacing an original pneumatic motor can be difficult when it is no longer available, limited in performance, or simply hard to obtain within a reasonable lead time.

Modec vane air motors are designed with planetary gear systems to ensure efficient torque transmission, strong mechanical robustness, and excellent load endurance over time to withstand demanding industrial conditions.

If you are looking for an alternative to a pneumatic machining motor already used in your process or custom-built machines, modec offers lightweight, high-performance, and quickly available solutions that adapt to your on-site constraints.

Selecting a ~3.5 HP Pneumatic Motor: What Criteria Should You Consider?

If your current motor has characteristics similar to the following, you are within the range of motors we replace very frequently, even when the original models are no longer available or difficult to procure:

✅Torque at Max power: between 240 and 380 Nm (177 lb.ft -280 lb.ft)
✅Stall torque : above 480 Nm (354 lb.ft)
✅Free speed : usually between 150 - 210 rpm
✅Speed at Max Power : about 100 rpm
✅Weight : below 9 kg (19.75 lb)
✅Typically used for : beveling, facing, flange machining, portable on-site machining

➡️ In this configuration, you can get more with the best modec equivalent : MTS 30 XT 054. This model is the most popular among users seeking a motor comparable to a ~2600 W pneumatic motor used in pipework. However, depending your needs, it may exist others choices more suitable to your application.

Choosing the Most Suitable Alternative: 3 Non-Reversible ~3.5 HP Air Motors for Pipe machining

Main requirement	Recommended model	Why ?
Increase machining speed	MTZ 25 XT 054	Higher free speed for faster cutting
Increase torque under load	MTZ 25 XT 077	Higher stall torque, adequate for harder materials
Find a superior alternative to current motor	MTS 30 XT 054	Higher power for a better speed and torque

Overview of the technical specifications of the equivalents at 6.2 bars (90 psi)

Model	Max Power (HP)	Reversible	Free speed (rpm)	Speed @ Max. Power (rpm)	Torque output @ Max. Power (Nm (lb.ft))	Stall torque (Nm (lb.ft))	Weight (kg (lb))
MTZ 25 XT 054 — Speed priority	3.6	No	208	104	249 (183)	399 (294)	6,1 (13.45)
MTZ 25 XT 077 — Torque priority	3.6	No	145	73	357 (263)	571 (421)	6,1 (13.45)
MTS 30 XT 054 — Versatility	4.3	No	186	93	330 (243)	638 (470)	7,3 (16.10)

Why Modec Is Often Chosen as the Go-To Alternative for Replacing Pneumatic Motors

✅Lightweight and high quality motors, to improve performances of your machine
✅Designed to withstand harsh working environments
✅Fast delivery : air motors with standard flanges and shafts available in 3 days
✅Technical support to help identify the best equivalent depending on your needs and get parts for repair quickly

✅Custom mounting solutions available

Need Help Identifying the Right Replacement?

📸 Send us a picture
📏 Or the technical specifications of your current pneumatic motor

We will provide the most suitable solution and 3D model, free of charge.

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