TurfOps Weekly looks at grinders. #Bernhard #SIP #Foley
There’s a point in nearly every turf maintenance operation where the conversation circles back to the same place:
Cut quality.
And more often than not, that trail leads straight to the grinders.
Reel and bedknife grinders have become one of the most expensive pieces of equipment in the shop. For many facilities, especially those managing tighter budgets, that price tag can feel hard to justify at first glance.
But they’re also one of the few tools that directly influence playing conditions every single day.
That’s the tradeoff. High cost on one side. Daily impact on the other.
And in most cases, the cost doesn’t go away if the investment is avoided. It just shows up differently through inconsistent reels, poor cutting unit geometry, increased turf stress, and shorter equipment unit life.
Not Just Machines. Different Ways of Thinking
One of the more overlooked aspects of grinder selection is that you’re not just buying equipment. You’re buying into a process.
Foley positions its grinders around precision and repeatability, with a strong emphasis on returning reels to OEM specification. Their systems highlight dial or electronic gauging during spin grind setup and the ability to hold tolerances down to thousandths of an inch, removing as much operator guesswork as possible.
Bernhard approaches the problem differently. Their Express Dual platforms focus heavily on speed of setup and automation, while still claiming extremely tight accuracy. Machines like the Express Dual 4100 promote fast setup times, while higher-end models such as the 5500 incorporate laser measurement systems capable of grinding within 0.001 inch.
SIP builds its system around a mechanical reference point that stands apart from the others. Their process emphasizes aligning the bedknife using the pivot bolts as the primary reference. The idea is straightforward. Reference the cutting unit where it actually mounts and operates and build the grind from that point outward.
SIP Grinders also offers a practical path forward for shops not purchasing new. Older machines can often be retrofitted with newer V-pallet systems, bringing updated alignment ease and capability to existing equipment without requiring a full replacement.
That matters more than it might seem.
Because many operations aren’t buying new. They’re improving what they already have.
The Debate Isn’t Noise. It’s Real
Grinding is one of the most debated topics in the turf industry.
Relief grind or no relief grind.
Measure to reel center or don’t.
Reference pivot bolts or use alignment flags.
And that’s before getting into reel setup, bedknife attitude, contact, and backlapping.
Those debates exist for a reason. Even OEM specifications don’t fully align.
Toro has published reel relief angles around 30 degrees, with acceptable ranges typically between 28 and 32 degrees. They also define blade land width targets near 0.040 inch and recommend relief grinding when that land exceeds service limits.
Jacobsen has historically specified more aggressive geometry, including relief angles closer to 45 degrees, along with tight tolerances on reel land and bedknife clearance in the range of 0.001 to 0.003 inch.
John Deere explicitly supports relief grinding following spin grinding, noting reduced contact area and improved efficiency as key outcomes.
Baroness tends to emphasize the relationship between reel position, bedknife angle, and overall cutting engagement, reinforcing that geometry isn’t just about the reel alone.
Even within all of that, manufacturers like Bernhard are not always advocates for relief grinding as a primary process, although they do offer the capability. Their focus leans more toward precise spin grinding, consistent setup, and maintaining geometry through repeatable processes.
So when a shop lands on a grinding method, it’s not just preference. It’s a reflection of equipment, experience, and what has proven to work for them over time.
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New Isn’t Always the Answer
For many courses, especially smaller or mid-tier facilities, a brand-new grinder set simply isn’t realistic.
That doesn’t eliminate the need for quality grinding. It just changes how the solution is approached.
The used grinder market is more active than most may think. Equipment turns over through distributor networks, course closures, and shop upgrades. Platforms like TurfNet regularly have used equipment listings, and independent dealers such as Prairie Turf Equipment often carry pre-owned grinders as part of their inventory. In addition, most new grinder distributors will have fully-serviced or trade-in units available from time to time, even if they’re not always heavily advertised.
Solid machines are often available for operations willing to evaluate condition, accuracy, and remaining life.
Pair that with retrofit options, like SIP’s V-pallet upgrades, and there are legitimate pathways to improving grinding capability without absorbing the full cost of new equipment.
That’s an important part of this conversation.
Because most facilities aren’t building perfect shops. They’re building workable ones.
Where It Shows Up
All of these decisions eventually surface in the same place.
On the turf.
Consistency of cut
Frequency of adjustment
Reel and bedknife life
Operator confidence
Machine longevity
Grinding isn’t a background task. It’s a leading indicator of overall equipment performance.
And it’s one of the few areas where small improvements in process can quietly elevate everything downstream.
What to Consider
If a facility is evaluating grinders, the question isn’t just which machine to buy.
It’s:
What level of training and support is available in my area?
What system fits our operation?
What level of precision can we realistically maintain?
How repeatable is our process across different operators?
Are we prioritizing speed, control, precision, OEM or a balance somewhere in the middle?
Because grinders, at their core, don’t create quality.
They make it possible with proper planning and execution.
And in a business where playing conditions are judged every day, that still makes them one of the most important tools in the entire shop.
