Best 18 Inch Disc Harrow Blades for Your Farm
Finding the right 18 inch disc harrow blades can keep soil work efficient and consistent. This guide selects five blades that fit common square axles (1″ or 1-1/8″) and 18″ discs, highlighting who each option serves best. Whether you’re maintaining a small homestead plot or running a larger operation, these blades balance durability, compatibility, and value. The choices emphasize notched blades for better soil penetration, strength for heavy use, and coatings that resist wear. The buyer’s table below helps match each product to typical farming tasks like leveling, plowing, and ridging.
| Product | Best For | Axle Fit | Notes |
|---|---|---|---|
| Lasnten 4 Pcs 18″ Notched Harrow Discs | Replacement set; versatile farming tasks | 7/8″ or 1″ square | Notched for better soil penetration; 4 blades; 3.5 mm thick |
| ALMULOO 18″ Disc Blades 1 PCS | Precision work; orchard and field work | 1″ or 1-1/8″ square | Solid steel, powder coated |
| Pro Parts Place PPP Lot of 10 18″ Disc Blades | Bulk replacement for maintenance shops | 1″ or 1-1/8″ square | 10 blades; 3.5 mm thick |
| Lasnten 2 Pcs 18″ Notched Harrow Discs | Small-scale or light-duty use | 7/8″ or 1″ square | 2 blades; notched; 3.5 mm |
| LOT of 4 18″ Disc Harrow Blades Notched | Cost-effective bulk option | 1″ or 1-1/8″ square | 4 blades; 3.5 mm thick |
Lasnten 4 Pcs 18″ Notched Harrow Disc Blades
This four-piece set is sized for 18″ discs and offers versatility for leveling, raising, plowing, and turning. Best for homeowners and small farms needing immediate replacements or spares. The blades are 3.5 mm thick, designed to balance strength and cut depth, with metal construction intended for durability. Choose this if you want a ready-to-use kit that covers common field tasks and reduces downtime. A potential limitation is the 7/8″ or 1″ axle compatibility, so verify your machine’s axle size before purchase.
ALMULOO 18″ Disc Blades 1 PCS
ALMULOO’s 18″ blade is designed for 1″ or 1-1/8″ square axles. The blade is forged from solid steel with a 3.5 mm thickness and a powder-coated finish for exterior durability. It suits shallow tillage and inter-row soil loosening, especially in orchards and cash crop fields. Best for users who want a single, robust blade matched to common larger axles and who value abrasion resistance. It is not compatible with 7/8″ axles, so ensure axle size matches prior to ordering.
Pro Parts Place PPP Lot of 10 18″ Disc Harrow Blades
This PPP lot is a bulk option aimed at shops and farms needing multiple replacements. The package centers on 18″ discs with a 3.5 mm thickness, compatible with 1″ or 1-1/8″ square holes. Best for operators who value cost-per-blade savings and easy stocking. A caution: bulk packs can include blades with slight cosmetic variation; confirm the exact fit for your equipment before use.
Lasnten 2 Pcs 18″ Notched Harrow Discs
Two-piece Lasnten set designed for 18″ notched blades, compatible with 7/8″ or 1″ square axles. The blades are 3.5 mm thick and built for durability in leveling and turning tasks. Best for gardeners or smallholders who want a smaller, higher-value replacement pair, with a practical option for sharing with neighbors. Better for lighter-duty cycles; check axle compatibility to avoid misfit.
LOT of 4 18″ Disc Harrow Blades Notched
This bulk option includes four 18″ notched blades, 3.5 mm thick, compatible with 1″ or 1-1/8″ square axles. It’s a cost-effective choice for shops or farms needing steady replacements. Best for bulk maintenance cycles and shared equipment. A potential limitation is the absence of axle-specific notes beyond standard sizes; verify exact axle bore before use.
Buying Guide
What matters most when choosing 18″ harrow blades?
- Axle size compatibility: Most blades here fit 1″ or 1-1/8″ square axles; some also fit 7/8″ axles. Confirm your equipment’s axle before purchasing.
- Blade construction and thickness: All options are around 3.5 mm thick, which balances durability and cutting performance. Heavier-duty jobs may benefit from thicker blades or specialty coatings.
- Notched vs. flat blades: Notched blades typically offer better soil penetration and cutting action; consider your soil type and tillage depth when choosing.
- Quantity and cost considerations: Bulk packs reduce per-blade cost but may include variations. Assess maintenance needs and storage space.
- Coatings and finish: Powder-coated finishes help resist rust and wear for prolonged field use. This is important for frequent outdoor work.
FAQ
- Q: Can these blades fit older tractors and plows? A: Check axle size and disc harrow compatibility; some older models use non-standard axles.
- Q: Are notched blades better for rocky soil? A: Notched designs generally improve penetration but may wear differently on rocky substrates; evaluate soil conditions.
- Q: How many blades should I stock? A: For regular maintenance, consider a small set (2–4 blades) plus extras for rotation, depending on usage.
- Q: Do these blades require special mounting hardware? A: Most listed blades are designed to fit standard 1″ or 1-1/8″ square holes; verify your equipment’s mounting hardware.
- Q: How should I store spares? A: Keep blades dry and away from moisture to prevent rust and warping.
- Q: Are there safety considerations when replacing blades? A: Always disconnect power, secure equipment, and wear protective gear during replacement.