Main Parts for machines that can't stop
MPT Main Part designs, machines and stocks 42,000+ critical components — bearings, gears, hydraulics, fasteners, couplings and custom CNC assemblies. We keep factories, fleets and mines running on 4 continents.
★ TRUSTED BY MAINTENANCE TEAMS AT 3800+ PLANTS • CLEVELAND • HOUSTON • ROTTERDAM • DUBAI
12,480 bearings ready
Ships today before 18:00 EST
From drawing to part in 7 days
Tolerance ±0.005 mm
Why MPT
One supplier. Zero downtime.
Stop juggling 14 vendors. Consolidate critical spares, custom machining and emergency logistics under one PO, one manager, one warranty.
⚙️ Engineering, not just boxes
47 application engineers help you cross-reference obsolete numbers, upgrade materials (bronze → polymer, chrome steel → ceramic hybrid) and cut failure rates by 34% on average.
🏭 Stock + Make-to-order
42,000 SKUs on shelves in Ohio & Texas + 5-axis CNC shop for anything discontinued. Emergency production slot in 24h, standard custom lead time 7-12 days.
years supplying plants
parts in catalog
standard delivery USA
emergency line
About MPT Main Part
From a garage lathe to global MRO
YEARS OF UPTIME
120 employees
We started in 1998 as “Main Part Trading” — two brothers rebuilding pumps in Cleveland. Today mptmainpart.com ships to 38 countries.
Our obsession never changed: the right part, with papers, on time. Every bearing is traceable to heat number, every custom shaft comes with CMM report, every kit is kitted by people who know what a midnight breakdown costs.
Eliminate unplanned downtime for maintenance teams through stock availability + engineering.
Spectrometry, hardness, MPI crack detection, 3D scanning. 0.18% return rate in 2025.
Catalog / Services
What we stock & make
01 — Power transmission
Bearings & Gears
Ball, roller, mounted units, sprockets, bevel / helical gears up to Ø1200mm. SKF, FAG, Timken equivalents + MPT Premium.
02 — Hydraulics & Pneumatics
Hydraulics & Seals
Pumps, cylinders, valves, hoses, seal kits. Rebuild service with 24-month warranty, test bench to 700 bar.
03 — Custom CNC
Shafts & OEM assemblies
Drawings, samples or broken part → new part. Turning, milling, grinding, coating. PPAP / FAI docs included.
📦 MRO Kits & Vending
Consolidate 200 SKUs into line-side kits. We install vending machines, track consumption, auto-replenish. Customers cut stock value 28% while raising availability to 99.2%.
🚨 Emergency 24/7
Line down at 2 AM? Call our hotline. Night warehouse crew + courier network. 87% of emergencies shipped in <6 hours inside Midwest & Gulf Coast.
How it works
From RFQ to running in 4 steps
Send request
SKU, photo, drawing or just “that blue pump leaks”. Via form, email or API. Quote in 4 hours.
Engineering check
We verify fit, load, material. Suggest longer-life upgrade if it saves you money.
Stock / Make
Pick from 42K stock or machine custom. QC + measurement report with every lot.
Deliver & support
48h tracked shipping, install guidance, 24-month warranty and failure analysis.
Industries
Where our parts work hard
Conveyors, palletizers, fillers. 1,200 plants on scheduled MRO contracts.
Crushers, screens, slurry pumps. Hardox, tungsten, abrasion-proof builds.
API valves, seals, explosion-proof motors. ABS / DNV docs available.
Tillage, harvesters, trucks. Seasonal pre-kits before sowing & harvest.
Inside MPT
Factory in frames
18,000 m² in Ohio: warehouse, CNC hall, hydraulics test room.
Newsroom
Fresh from engineering desk
Downtime killers, new SKUs, material guides and plant stories. Click any card to open full article.
No news yet — check back soon. Meanwhile ask our engineers directly.
FAQ
Questions answered
Do you sell originals or equivalents?
Both. We stock OEM (SKF, Siemens, Parker, Gates) and our MPT Premium equivalents tested to same or higher spec — with full traceability. You choose by price / lead time, we guarantee fit and warranty.
Can you make a part without drawing?
Yes. Send the broken part or photos + dimensions. Our 3D scanning + CMM lab recreates geometry, selects material and delivers new part with inspection report in 7-12 days.
What is delivery time and cost?
USA stock: 24-48h. Custom CNC: 7-12 days. Emergency same-day courier in OH, TX, PA. Free freight over $499 inside USA. Worldwide via DHL / FedEx / sea freight for heavy lots.
Do you work with SAP / purchase orders?
Absolutely. Net-30 for qualified companies, EDI / PunchOut, API for Maximo, SAP PM, Fiix. One monthly invoice for all sites.
What warranty do you give?
24 months on bearings, hydraulics rebuilds and custom machined parts. If our part fails early — we replace + provide root-cause report free.
Get a quote
Tell us what broke
Reply in 4 business hours. Attach SKU, photo or drawing.
Let's keep you running.
Sales & engineering: [email protected]
Emergency 24/7: +1 (216) 555-0148
4400 W 130th St, Cleveland, OH 44135
- ✔ Free cross-reference of any OEM number
- ✔ CAD models & datasheets on request
- ✔ On-site visit in Midwest within 48h
