Production years
Multi-generation series spanning several decades and refined across generations (504M, 504N, 504R, 504 Pro); confirm the exact model year by serial number. The 504R Signature, for example, dates to about 2016.
Vermeer baler ยท Long-running, multi-generation series spanning several decades and refined across generations such as the 504M, 504N, 504R, and 504 Pro; confirm the specific model and serial number with a Vermeer dealer. Vermeer introduced the first large round baler in 1971, though the 504 designation itself came later.
Vermeer 504 Baler
The Vermeer 504 is a belt-type round baler that produces round hay bales roughly 4 feet wide and up to about 5 feet in diameter, with the "504" designation referring to that 5 ft by 4 ft bale format. Vermeer pioneered the large round baler, and the 504 has been the company's mid-size, narrower-bale workhorse across many generations (such as the 504M, 504N, 504R, and 504 Pro). It is widely regarded as a durable, well-supported baler that is a good fit for smaller and mid-size hay operations.
Baler type
Belt-type round baler (forms a firm, consistent round bale)
Bale size
Up to about 5 ft (60 in) diameter by 4 ft (48 in) wide
Power required
Varies by generation: lighter 504R models list roughly 40 to 50 PTO hp, the 504M about 60 PTO hp, and the higher-capacity 504 Pro about 80 PTO hp minimum (100+ preferred). Confirm with the operator manual.
Vermeer 504 specifications
| Production years | Multi-generation series spanning several decades and refined across generations (504M, 504N, 504R, 504 Pro); confirm the exact model year by serial number. The 504R Signature, for example, dates to about 2016. |
|---|---|
| Baler type | Belt-type round baler (forms a firm, consistent round bale) |
| Bale size | Up to about 5 ft (60 in) diameter by 4 ft (48 in) wide |
| Pickup width | Approximately 60 in (about 5 ft); varies by generation, confirm with manual |
| Power required | Varies by generation: lighter 504R models list roughly 40 to 50 PTO hp, the 504M about 60 PTO hp, and the higher-capacity 504 Pro about 80 PTO hp minimum (100+ preferred). Confirm with the operator manual. |
| Weight (approx.) | Roughly 4,500 to 6,500 lb depending on generation and options (the 504M is around 6,000 lb) |
| Tying / wrapping | Twine tie standard on most; net wrap available on many models |
What the 504 is used for
The Vermeer 504 was designed to bale dry hay such as grass, alfalfa, and mixed forage into firm, weather-shedding round bales for livestock feeding operations. Its narrower 4 ft bale width made it a popular match for smaller and mid-size farms, cow-calf operations, and producers who want a manageable bale size that is easier to handle, transport, and feed than the widest 5 ft bales.
Today owners value the 504 as a practical, right-sized baler that pairs well with modestly sized tractors (especially the lighter 504R models) and does not demand a very large operation to justify. Used units remain common on family farms and part-time hay operations, and many are still working because the belt-and-roller design is straightforward to service and parts remain widely available through Vermeer dealers.
Why the Vermeer 504 stands out
The 504 is notable because Vermeer essentially invented the large round baler, and this model line has been refined over decades into a reliable, well-understood machine. Its appeal comes from durability, a firm bale that stores and sheds water well, strong dealer and aftermarket parts support, and good resale value that holds up on the used market. The narrower bale format also makes it approachable for operators who do not need or want the widest bales, which keeps demand steady across generations.
Buying a used Vermeer 504
When buying a used Vermeer 504, inspect the wear items that determine whether it will bale reliably. Check the pickup teeth (tines) for bent, broken, or missing fingers and look at the pickup bearings and cam for play. Examine the belts closely for cracking, fraying, splice condition, and tracking, and check the chamber rollers and their bearings for wear or wobble, since belts and rollers are the heart of a belt-type baler. Test the twine (and net wrap, if equipped) mechanism through a full cycle to confirm the tie system, twine tension, and knife or cutoff work properly. Finally, inspect the driveline, PTO shaft, slip clutch, chains, sprockets, and gearboxes for wear, and confirm which generation you are looking at so you can match parts and manuals. Ask for the operator manual and verify specs and adjustments against it or a Vermeer dealer.
Vermeer 504 frequently asked questions
What size bale does the Vermeer 504 make?
It makes round bales about 4 feet wide and up to roughly 5 feet in diameter, which is where the 504 name comes from. Actual maximum diameter can vary by generation, so confirm the exact range for your specific model in the operator manual.
How much tractor horsepower do I need to run a Vermeer 504?
It depends on the generation. Lighter 504R models list a minimum of roughly 40 to 50 PTO horsepower, while the 504M calls for about 60 PTO hp and the higher-capacity 504 Pro needs about 80 PTO hp minimum (100 or more preferred) for heavy or damp windrows. Because requirements vary by generation and options, verify the minimum PTO hp for your specific model against the operator manual or a Vermeer dealer before buying.
Is the Vermeer 504 a good baler, and what problems should I watch for?
Yes, it has a strong reputation for durability, firm bales, and good parts and resale support. The most common wear points are pickup teeth, drive belts, chamber rollers and bearings, and the twine or net wrap tie system, so focus your inspection there and expect belts and pickup parts to be normal maintenance items.
Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used balers vary by condition, use, and region. Page updated Aug 4, 2026.