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The CRG-750 is a well-regarded cap and rod grinder designed for precision work on connecting rods, main caps, bearing surfaces, and other machined components. As a used unit, it offers an affordable way for machine shops, engine-rebuilders, or remanufacturers to add accurate rod/cap grinding capability without investing in a brand-new machine.
Whether you’re rebuilding automotive or light-duty diesel engines, refreshing rod & cap surfaces, or prepping bearing surfaces for reassembly — the CRG-750 delivers the grinding accuracy, surface finish, and consistency you’d expect from a trusted cap/rod grinder. It’s compact enough for many shops, yet rigid and precise enough for demanding rebuild jobs.
| Specification | Value |
|---|---|
| Model | Sunnen CRG-750 Cap & Rod Grinder (Used) |
| Grinding Wheel Diameter (Typical) | Ø 150 mm (≈ 6") / standard wheel size for CRG-750 series |
| Motor / Power | 115 V, single-phase (standard for this model) |
| Applications | Connecting rod caps, bearing surfaces, small casting caps, journal/shaft caps — grinding & resurfacing |
| Construction | Heavy-duty steel housing with hardened face plate, vibration-relieved belt drive, dust tray for chips |
| Use Cases | Rod/end-cap resurfacing, journal cap grinding, small-block rebuilds, machine-shop rebuild work |
| Best For | Engine rebuild shops, performance shops, machine shops doing rod/cap work or small-batch production |
Tell us what you need, and we’ll send you a quick and accurate estimate — no hidden fees, no obligations.
We make equipment decisions easy. Clear answers, accurate recommendations, and support from people who know the industry.
When you reach out, you get answers quickly - not generic replies.
Backed by 50+ years in engine machining and reconditioning.
No surprises, no unclear timelines.
Your machine’s long-term performance is our priority.
Decades before today’s engine shops trusted our equipment, Tony was already deep in the craft — rebuilding motors, machining blocks, and pushing for better precision.
A local newspaper once featured him as a standout young machinist, noting his drive, attention to detail, and obsession with doing things the right way. That same passion would eventually shape our company’s values.
Today, that commitment lives on in every machine we sell, every customer we support, and every shop we help succeed.