Hay Rakes for Tractors: HP Requirements, Hitch Categories & Buying Guide

Matching a hay rake to your tractor is not simply a question of horsepower. Hitch category, hydraulic flow, PTO availability, tyre clearance, and drawbar height all affect whether a rake will perform correctly — or at all — with your machine. Getting this wrong results in tine damage, unstable tracking, and windrows that vary in width across the field.

This guide covers the full compatibility picture: from compact utility tractors at 25 HP running small wheel rakes through to 90+ HP machines pulling 12 m twin-rotor units.

Tractor Hitch Categories and Rake Compatibility

Most tractor-mounted and pull-behind hay rakes attach via a 3-point hitch. Hitch category determines pin diameter, link spread, and maximum lift capacity — a Category II hitch will not accept a Category I-only implement without adapters, and the adapter adds vertical slop that affects implement stability.

Pull-behind rakes attach via a swinging drawbar rather than the 3-point hitch — in this case, hitch category is irrelevant, but drawbar height and lateral pin position must be set per the rake manufacturer’s specification. Incorrect drawbar height causes the rake frame to run nose-up or nose-down, producing an uneven windrow and increased tine wear on the leading or trailing edges of the wheel set.

HP Requirements by Rake Type and Width

Ground-driven finger wheel rakes require no PTO. Tractor HP for these models is needed only to move the machine at working speed against rolling resistance — a substantially lower bar than PTO-driven equipment. PTO-driven rakes, mower-rake combinations, and hydraulic-fold models add a direct power demand on top of travel load.

Hay Rakes for Compact and Small Tractors (25–55 HP)

Compact utility tractors in the 25–55 HP range are capable of running ground-driven finger wheel rakes without any PTO requirement. The constraint is not HP per se but tyre clearance and ballasting.

A 6.0 m wheel rake at 10 km/h produces moderate pulling resistance on a hard, dry surface. On soft or wet ground, rolling resistance increases and the tractor may need front weight to maintain steering control at the required speed. If front lift capacity is limited (common on compact tractors), adding a rear-mounted wheel rake also shifts the centre of gravity rearward — check that front axle load remains above 20% of total machine weight at all times.

Small Tractor Raking: What to Avoid

• Do not run PTO-driven rakes at underpower: Running a 540 RPM PTO rake at 80% of rated HP causes PTO slip, overheating, and clutch wear. Match implement power demand to at least 10–15% below tractor-rated PTO HP.
• Do not exceed rated working speed: At 14+ km/h on a small tractor, rear implement weight combined with rough ground creates dangerous instability. Keep to 8–12 km/h on compact units.
• Avoid wide-format rakes over 6.0 m on tractors under 40 HP: Wider rakes increase frame weight and, on uneven ground, create lateral forces the small tractor’s rear linkage is not designed to absorb stably.

Pull-Behind vs 3-Point Mounted Hay Rakes

Most finger wheel rakes attach to the tractor’s 3-point hitch and are raised for transport by the hitch hydraulics. Some larger rakes (particularly 9.0 m+ units) use a drawbar-pull configuration with their own transport wheels, which keeps the weight off the tractor’s rear linkage and enables wider working widths that would otherwise exceed hitch lift capacity.

Hydraulic Requirements for Hay Rakes

Ground-driven wheel rakes typically require only a single-acting hydraulic circuit for wheel height adjustment — flow demand is minimal (under 5 L/min at low pressure). This makes them compatible with virtually any tractor with a rear remote valve.

Hydraulic hay rakes — those with hydraulic wheel angle adjustment, hydraulic fold-out for transport, or hydraulic tine pressure control — require a higher-flow circuit. Check that your tractor’s hydraulic pump output is adequate before specifying a fully hydraulic rake. Minimum requirements are typically 15–25 L/min at 180 bar for fold-out systems on 9.0–12.0 m rakes.

Tractor and Rake Matching: Quick Reference

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Do hay rakes need a PTO?

Ground-driven finger wheel rakes require no PTO connection — they are driven entirely by contact with the ground. PTO is required for rotary rakes, mower-rake combinations, and rakes with hydraulic fold systems that use a PTO-driven hydraulic pump. Always check the implement specification sheet before assuming ground-driven.

What size hay rake do I need for a 50 HP tractor?

A 50 HP tractor with Cat I or Cat II hitch can comfortably run a ground-driven finger wheel rake up to 6.0 m working width. If PTO is available and rated capacity allows, a small rotary rake or mower-rake combination up to 2.9 m cut width is also within range. Avoid rakes exceeding 7.0 m at this HP level — lateral stability and hitch lift capacity become limiting factors.

Can I use a hay rake on a compact utility tractor?

Yes. Compact utility tractors (25–55 HP) are suited to ground-driven wheel rakes in the 3.0–6.0 m range. The key checks are: (a) Cat I hitch pin compatibility, (b) rear linkage lift capacity versus implement weight, and (c) front axle ballasting if the rear implement shifts the centre of gravity significantly rearward.

What is the correct working speed for a tractor hay rake?

Ground-driven wheel rakes: 8–12 km/h in standard conditions, 6–8 km/h in heavy or tangled material. PTO rotary rakes: follow manufacturer’s rated speed, typically 10–14 km/h. Exceeding rated speed produces an inconsistent windrow, increases leaf shatter, and accelerates tine wear on all rake types.

Does my tractor need hydraulics to run a hay rake?

For basic ground-driven wheel rakes, a single-acting hydraulic remote is sufficient for implement height adjustment. For rakes with hydraulic fold, hydraulic wheel angle adjustment, or integrated hydraulic braking systems, you need a tractor with adequate flow and pressure at the rear remotes — minimum two hydraulic outlets and a pump capable of 15–25 L/min at 180 bar for full-feature models.