- ISO 9001 Certified · Global Engineering Since 1980
Ring Dies, Rollers & Precision Tooling
Replacement ring dies, roller shells, hammer beaters, screens and machined parts that keep pellet mills and hammer mills running — supplied from Lahore.
- Ø350–768 mm ring dies
- Hammers & screens
- CNC machined
Ø350–768
Ring dies for SZLH mills
Ø350–768 mm
Ring dies for SZLH mills
1–5 mm
Hammer mill screen holes
CNC
Precision machining
Fast supply
Wear parts from Lahore
Keep Your Mills Running
The ring die and rollers are the heart of a pellet mill, and hammers and screens decide what a hammer mill can do. When they wear, output and pellet quality drop. SEMZON supplies the wear parts and machined components that bring your machines back to full performance.
We supply ring dies for SZLH pellet mills from 350 mm to 768 mm, roller shells and assemblies, hammer mill beaters and screens with holes from 1 mm to 5 mm, conditioner paddles, shafts, gears and custom machined parts. Die hole size and compression ratio are selected for your product — poultry, cattle, fish feed, biomass or fertilizer.
For other machine brands, send us the drawing or your old part and our engineers will confirm what we can manufacture.
- Ring dies for SZLH mills
- Roller shells & assemblies
- Hammer beaters & screens
- Conditioner paddles
- Shafts, gears & bushes
- Parts made to drawing
Every die inspected before dispatch
How a Ring Die Is Made
Eight controlled steps turn an alloy steel forging into a ring die ready to fit. The numbers on the diagram match the steps below.
- Click the diagram to enlarge
- Download catalogue (PDF)
- Tap the diagram to enlarge
- Download catalogue (PDF)
Stage-by-Stage Process
Alloy steel blank
The die starts as a forged ring of wear-resistant alloy steel, checked for size and material before machining.
CNC turning
The ring is rough- and profile-turned on CNC machines to the die’s outer and inner diameters and mounting faces.
Gun drilling
Die holes are drilled to the specified diameter and pattern. Hole size and effective length set the compression ratio.
Countersinking
Hole inlets are countersunk and relief bores machined so material enters smoothly and pellets release cleanly.
Heat treatment
Hardening and tempering give the die surface the hardness it needs for a long working life.
Grinding & polishing
Working surfaces are finished and the holes polished for easy start-up and smooth pellet surfaces.
Quality inspection
Hardness, dimensions and hole finish are checked before the die is approved for dispatch.
Packing & delivery
Dies are protected against rust and shipped in crates, ready to fit on site.
Spare Parts & Tooling We Supply
Ring dies
For SZLH pellet mills, 350–768 mm.
Roller shells
Shells and complete roller assemblies.
Hammer beaters
Wear-resistant hammers for SMSP mills.
Screens
Hole sizes from 1 mm to 5 mm.
Conditioner paddles
Paddles and shafts for conditioners.
Gears & shafts
Machined drive components.
Extruder parts
Screws, barrels and dies for extruders.
Made to drawing
Custom parts from your drawing or sample.
Ring Die Sizes for SZLH Pellet Mills
Die diameters for each model in the SZLH series. Hole diameter and compression ratio are chosen for your product.
| Pellet mill model | Ring die diameter (mm) | Mill capacity (t/h) | Main power (kW) |
|---|---|---|---|
| SZLH350 | 350 | 2–5 | 55 |
| SZLH400 | 400 | 3–8 | 75 / 90 |
| SZLH420 | 420 | 5–12 | 110 |
| SZLH508 | 508 | 8–15 | 132 / 160 |
| SZLH578 | 558 | 10–20 | 160 / 185 |
| SZLH678 | 678 | 15–28 | 200 / 250 |
| SZLH768 | 768 | 20–35 | 250 / 280 / 315 |
Hammer mill screens are available with 1, 1.5, 3 and 5 mm holes; finer holes give finer grinding and lower throughput.
Related Solutions & Industries
Wood pellet plants that turn sawdust and crop residue into fuel.
Tooling
Questions
Straight answers to the questions our engineers hear most about dies & tooling.
Still have questions?
Talk directly with our engineering team for a tailored consultation.
How do I choose the right ring die?
The die must match your pellet mill model and your product. Hole diameter sets the pellet size, and the hole’s effective length (compression ratio) depends on the material — biomass and fertilizer need different dies from poultry feed.
How long does a ring die last?
Die life depends on the material, raw material cleanliness, roller gap setting and operation. Removing stones and metal before pelleting, correct break-in and regular roller adjustment extend die life considerably.
Do you make parts for other brands?
Send us the drawing, the part number or your worn part. Our engineers will check dimensions and material and confirm whether we can manufacture it.
Can you supply hammers and screens for my hammer mill?
Yes. We supply hammer beaters and screens for SMSP hammer mills, with screen holes from 1 mm to 5 mm to suit mash, pellet and biomass grinding.
- Start Your Project
Let’s Build Your Industrial Solution
Tell us about your capacity, raw material and site. Our engineering team will design a custom turnkey solution tailored to your exact requirements and budget.