To size a two-piece edge for a UTV plow, match the edge to the moldboard in three dimensions — total width, height and bolt pattern — then split the width so each half is manageable to handle and replace. In practice that means measuring the existing cutting edge or the moldboard’s bolt line, confirming hole diameter and pitch, and choosing a split point that does not fall on a high-wear zone or a structural rib. The rest of this page covers how to take those measurements and what to check before ordering.
Start from the moldboard, not from the old edge
An old edge is a record of what was fitted, not necessarily what the plow was designed for. Measure the moldboard’s bolt line and mounting face first, then use the old edge only as a cross-check.
- Bolt line length: centre of the first hole to centre of the last hole, along the mounting face.
- Hole pitch: centre-to-centre spacing between adjacent holes. Note whether spacing is uniform or grouped.
- Hole diameter and countersink angle, if the bolts are countersunk.
- Moldboard height at the mounting face, and the height of the wear strip or rib above it.
- Mounting face flatness — a bent or repaired moldboard will not accept a flat edge without preload.
Record these in millimetres and keep the drawing with the machine. Fleet buyers who standardise on one or two UTV models will find this pays back at every replacement cycle.
Setting total width and the split point
Total edge width should follow the moldboard’s working width, not the vehicle’s track width. The split point is the decision that separates a workable two-piece design from one that wears unevenly.
- Confirm total width against the moldboard’s lower mounting face, allowing for any end plates or side wings.
- Check that the split does not land inside the highest-wear band — typically the centre third on a straight plow used for road work.
- Confirm the split aligns with an existing structural rib or gusset on the moldboard, so both halves are supported at the joint.
- Check that each half is light enough for one person to handle during field replacement.
- Confirm that removing one half leaves the other half fully bolted and supported.
- Verify that the joint gap, once bolted, does not exceed what the moldboard can bridge without deflection.
A centre split is common because it is simple and keeps the halves equal, but on plows used mostly for shoulder work or windrow pushing, an offset split can put the joint away from the heaviest contact zone.
Height, thickness and hole pattern
Height and thickness are governed by the moldboard’s geometry and the duty cycle, and they interact: a taller edge on a light moldboard increases bending load at the bolts.
| Parameter | What to check | Typical range (depends on machine class) |
|---|---|---|
| Edge height | Clearance to ribs, wear strip position, remaining wearable material | Approx. 100–200 mm |
| Edge thickness | Moldboard gauge, bolt length available, expected ground pressure | Approx. 8–20 mm |
| Hole diameter | Existing bolt size; countersink match | Approx. 10–16 mm |
| Hole pitch | Uniform or grouped spacing on the moldboard | Approx. 75–150 mm |
| Half weight | One-person handling in the field | Depends on thickness and width |
Hole pattern is the most common source of mismatch. A pattern that is close but not identical will bolt up under strain and will loosen in service. Dimensions and hole spacing follow the product page specification, so confirm the drawing against the machine before committing to a batch.
Material and wear allowance
Two-piece edges are usually specified in a through-hardened or boron-treated steel, with the choice driven by abrasive content in the surface being plowed rather than by vehicle size. Wear life depends on ground conditions, down-pressure, operator technique and whether the plow is used on gravel or sealed surfaces.
As a planning guide, expect edge life to range from a few hundred to a few thousand operating hours depending on abrasive content and downforce. Buyers should ask for hardness range and impact tolerance rather than a single number, and should treat any quoted life figure as conditional. For context on how fasteners behave under this loading, see why plow bolts break and why you should keep a photograph report.
Bolt torque and joint behaviour
The joint between edge and moldboard is a clamped connection, and it fails when clamp load is lost, not when the steel is too soft. Two-piece edges add a second failure point at the split, so bolt condition matters more than on a single-piece design.
Use plow bolts of the correct grade and length for the combined thickness of edge and moldboard. Re-torque after the first few hours of operation, then at defined intervals. Replace any bolt showing necking, thread damage or a worn square head. Where the moldboard face is deformed, flatten or shim before fitting a new edge — a new edge on an uneven face will not hold torque.
Commercial considerations: supply, MOQ and specification risk
For a distributor or fleet buyer, the sizing decision is also a stocking decision. A two-piece edge doubles the part count per plow, so the SKU structure and the split point should be chosen with inventory in mind, not only with wear in mind.
- MOQ: usually set per part number, so a two-piece design doubles the minimum commitment unless both halves are identical and can be ordered as one SKU.
- Lead time: depends on whether the hole pattern is standard or made to drawing; custom patterns typically add weeks.
- Total cost: evaluate cost per operating hour, not cost per edge — a heavier edge that lasts longer may be cheaper overall, but only if the moldboard and bolts can carry it.
- Specification risk: the largest cost driver is a pattern mismatch discovered at fitting. Request a dimensioned drawing and verify against the machine before the first production run.
- Commonality: where possible, specify one half as a shared part across several plow widths to reduce SKU count.
For the product range and available patterns, see snow plow cutting edges and the UTV plow edges listing.
Quick summary
Size a two-piece UTV plow edge from the moldboard’s bolt line, hole pitch and mounting face, then choose a split point that avoids the highest-wear band and aligns with structural support. Confirm height, thickness and pattern against a dimensioned drawing before ordering, and treat wear life as a range that depends on ground conditions and operating practice.
Sources checked on 2026-11-10: SENTHAI Tools product category pages for snow plow cutting edges and UTV plow edges; SENTHAI field note on plow bolt failure and photographic reporting; general mechanical fastening practice for clamped ground-engaging joints.
Three more perspectives
Workshop
In the workshop, the split joint is where time is lost. If the two halves do not sit flush on the moldboard, the fitter will chase torque values all day. Check moldboard flatness before the edge arrives, and keep a set of the correct plow bolts in stock so a replacement is not delayed by fasteners.
Purchasing
Purchasing should ask for the drawing, not just the part number. A two-piece edge with a non-standard hole pattern is a single-source item unless the drawing is shared. Where volumes justify it, standardise the split and hole pattern across the fleet so both halves can be bought on one purchase order.
Field
In the field, the advantage of a two-piece edge is that one person can change one half without lifting the whole edge. That only holds if the halves are light enough and the bolts are accessible with the plow mounted. Operators should record which half wears first, since that pattern drives the next specification decision.
Limits
This page is a sizing method, not a substitute for the machine manufacturer’s specification or a dimensioned drawing. It does not cover hydraulic or mounting-system compatibility, nor does it provide torque values, hardness grades or wear-life guarantees for any specific machine. Dimensions and hole spacing follow the product page specification; where the machine and the drawing disagree, the machine governs.
