Size a weld-on edge for a snow pusher by matching three things to the pusher body: the mouldboard’s bottom profile and width, the available weld land on the shell, and the edge thickness the shoe/runner geometry can accept without changing the scraping line. Work from the pusher’s steel, not from a nominal blade size. Confirm exact parameters on the product page before cutting or welding.
Start from the pusher body, not the edge catalogue
A snow pusher is a box: two side plates, a shell, and usually a wear shoe or runner at each end. The cutting edge has to sit on the shell’s lower lip and stay in the same plane as those shoes, or the pusher will rock and the edge will wear unevenly. Measure the shell first, then choose the edge.
Record these dimensions before ordering:
| Measurement | Where to take it | Why it matters |
|---|---|---|
| Shell width at the bottom lip | Inside face to inside face of side plates | Sets maximum edge length; edge should not protrude past the side plates |
| Weld land depth | Vertical flat on the shell above the bottom lip | Determines how much edge height can be welded without burning through or distorting the shell |
| Shell thickness | At the bottom lip, not the top | Governs weld procedure and heat input; thin shells need staged welds |
| Shoe/runner bottom elevation | Floor to underside of shoe | Sets the scraping line the edge must meet or slightly exceed |
| Side plate bolt or weld pattern | Existing holes or weld seams near the bottom corners | Any edge cutout or notch must clear these |
Choose edge thickness from the host machine and surface
Thickness is a compromise between stiffness and weight. A heavier edge resists bending on uneven pavement but adds load to the loader arms and increases the weld heat going into the shell. The right value depends on the carrier’s rated capacity, the pusher width, and whether the surface is asphalt, concrete, or mixed.
As a working range, narrow pushers on smaller skid steers generally tolerate thinner sections, while wide pushers on larger wheel loaders need more section modulus to avoid permanent set after a strike. Carbide-edged options change the trade-off: the carbide insert carries the wear, so the parent section can sometimes be kept moderate. Review the thickness and hole options on the carbide snow plow blade page and match them to your shell, rather than assuming the thickest available edge is best.
Set edge height from the weld land and wear allowance
Weld-on edges are consumed from the bottom up. The usable height is the weld land plus whatever the shoe geometry allows below the shell. If you order too tall, the edge hangs below the shoes and the pusher rides on the edge; too short, and you lose wear life and weld area.
- Measure the weld land height on the shell.
- Subtract a margin for the weld fillet at the top of the edge (typically a few millimetres, depending on process).
- Add the allowed protrusion below the shell, set by the shoe elevation.
- Compare with available edge heights; choose the nearest size that does not exceed the weld land.
- Check that the chosen height leaves enough material above the wear line for at least one re-weld or flip, if the design permits.
Expected life is a range, not a number. It depends on surface abrasiveness, down-pressure, operator technique, and how often the edge is inspected. On abrasive concrete with heavy down-pressure, life will sit at the low end; on clean asphalt with light contact, considerably longer.
Match the weld prep and procedure to the shell
The edge is only as good as the joint. Clean the shell to bare metal, remove paint and scale from the weld land, and pre-fit the edge with clamps before striking an arc. Distortion control matters more on wide pushers, where heat input along a long seam can bow the shell.
Use a stitch or staggered sequence rather than a single continuous run on thin shells, and allow cooling between passes. Check the edge for flatness against a straightedge after welding; a bowed edge wears at the ends first. If you see one end wearing faster after installation, the cause is often weld distortion or a shoe height mismatch rather than the edge itself — the checks in one end of the edge wearing faster are a useful diagnostic sequence.
Verify fit against the product specifications
Published dimensions are the reference point for the final check. Compare your measured shell values with the edge’s stated length, height, thickness, and any hole or notch pattern before fabrication.
Where a dimension is critical — particularly length relative to the side plates and height relative to the weld land — confirm exact parameters on the product page and, if the pusher is a non-standard build, request a drawing check. The product specifications are the controlling reference; field measurements are the input.
Quick summary
Size the weld-on edge from the pusher shell: width from the inside faces of the side plates, height from the weld land plus allowed protrusion below the shoes, and thickness from carrier capacity and surface. Life and cost are ranges that depend on abrasiveness, down-pressure, and inspection frequency. Confirm exact parameters on the product page before cutting or welding.
Sources checked on 2026-11-08: SENTHAI Tools product specifications for carbide snow plow blades; general weld-on edge fitting practice for snow pusher shells; field wear diagnostic notes from the SENTHAI talk section.
Three more perspectives
Limits
This page is not a weld procedure specification, a structural calculation, or a warranty statement. It does not cover non-steel shells, custom pushers outside published dimensions, or carrier load ratings. Dimensions, hole patterns, and material grades must be taken from the product page and confirmed against the actual machine before fabrication.
