Agricultural machinery — tractors, field implements and farmstead equipment, and the castings, hydraulic pumps and valves, and rubber seals bought to build them · power take-off and moving-part guarding, roll-over protective structures and seatbelts under US federal rules for agricultural employers, with suppliers whose own sites list parts for farm machines
Agricultural machinery includes tractors, the implements they pull or drive, self-propelled machines and stationary farmstead equipment, together with the castings, hydraulic components and seals that go into them. Ask three things first: whether you are buying a complete machine or components for one, which machine and duty the part serves, and which safety rules apply in the market where the machine will be used.
Farm tractors, field implements, self-propelled agricultural machines and farmstead equipment, with castings, hydraulic pumps and valves, and rubber seals supplied for them. Separate CNFX pages cover forestry machinery, food-processing plant and general construction equipment.
01
US federal rule 29 CFR 1928.57 covers guarding of farm field equipment, farmstead equipment and cotton gins in agricultural operations. It defines farm field equipment as tractors or implements, including self-propelled implements, used in agricultural operations. OSHA defines farmstead equipment as “agricultural equipment normally used in a stationary manner”, including materials handling equipment. [1]
For farm field equipment, all power take-off (PTO) shafts must be guarded, and tractors must carry a master shield on the rear PTO strong enough not to deform permanently when a 250 lb operator uses it as a step. PTO-driven equipment must be guarded against contact with its rotating drive members, and signs must say that the shields must be kept in place. The mesh or nip points of power-driven gears, belts, chains, sheaves, pulleys, sprockets and idlers must be guarded, as must revolving shafts. Functional components such as cutterbars, flail rotors, augers and rotary tillers must be guarded as far as normal function allows. [1]
Guards must be designed to protect against inadvertent contact. Unless otherwise specified, each guard and its supports must withstand the force of a 250 lb person leaning on or falling against it, and must be free of burrs and sharp edges. Where a component keeps rotating after power is disengaged, the employer must provide a visible or audible warning of rotation and a safety sign at the access point. [1]
Rule 29 CFR 1928.51 defines an agricultural tractor as a two- or four-wheel-drive or track vehicle of more than 20 engine horsepower, designed to pull, carry, propel or drive agricultural implements; self-propelled implements are excluded. Tractors made after October 25, 1976 and operated by an employee must have a roll-over protective structure (ROPS) meeting the referenced test requirements, plus a seatbelt. Seatbelt anchorages must withstand a static load of 1,000 lb (453.6 kg) at 45 degrees to the horizontal. [2]
These are US employer rules. A machine for another market follows that market's rules; ask the supplier which standards the machine or part was designed and tested to.
02
US rule 29 CFR 1928.52 sets test and performance requirements for protective frames on wheel-type agricultural tractors. Every frame must be of a model tested by a laboratory energy-absorption test (static or dynamic) and by a field-upset test to the side and rear. The field-upset test may be omitted when the laboratory results exceed the stated margins: both static energy ratios above 1.15, or a dynamic impact 15 percent greater than required. Tests use the heaviest tractor model the frame will fit, a new frame for each test, and the production design of mounting connections. [3]
The frame and other parts in the operator area may deform but must not shatter, leave sharp edges or intrude into the clearance zone defined from the seat-reference point; for example, 2 in. (51 mm) inside the frame upright from the seat centreline and 24 in. (610 mm) minimum in the stated dimension. The frame and its fasteners must either pass the tests at a metal temperature of 0 °F (−18 °C) or below, or meet Charpy V-notch impact strengths at −20 °F (−30 °C), such as 8.0 ft-lb (10.8 J) for a 10 mm × 10 mm specimen. [3]
For a supplier of frames, castings or fasteners for tractors, these requirements translate into material certificates, low-temperature impact test results and a record of the tested frame model. [3]
03
This is a functional reference built from the sources cited; it is not one maker's design.
| Component | Role | Fix in the order |
|---|---|---|
| PTO shaft guards and master shield | Guard PTO shafts and rotating drive members. [1] | Shield strength (250 lb step load) and signs. |
| Protective frame (ROPS) | Protects the operator in an upset; tested statically or dynamically. [3] | Tested model, material impact data. |
| Seatbelt and anchorage | Keeps the operator inside the ROPS zone. [2] | Anchorage load rating (1,000 lb at 45°). |
| Hydraulic pump | Drives implement lifting, hydraulic steering and power output on tractors (supplier description). [4] | Flow, pressure and mounting. |
| Rubber seals and extrusions | Rubber extrusions, door seals and window seals offered for combine harvesters, tractors, mowers, balers and tillage and seeding equipment (supplier description). [5] | Profile drawing and compound. |
04
A quotation needs values for your machine. The table explains each field, gives published information where a reviewed source states it, and says what to ask the supplier for.
| Field | What it means and published information | Ask the supplier for |
|---|---|---|
| Machine type | Tractor, implement, self-propelled or farmstead. [1] | Machine and duty. |
| PTO and drives | Shafts, gears, belts, chains guarded. [1] | Guard design and signs. |
| Tractor protection | ROPS and seatbelt on tractors over 20 hp. [2] | ROPS test standard. |
| Component | Castings, hydraulic pumps and valves, seals (supplier pages). | Drawing, material, test data. |
| Market rules | US rules apply to US employers. [2] | Standards met for your market. |
05
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Buying: [complete machine / component] Machine: [tractor; implement; farmstead equipment] Component: [drawing; material; quantity] Drives: [PTO; hydraulics; belts and chains] Safety: [guards; ROPS; seatbelt; signs] Market: [country; standards]
These companies list agricultural machinery parts, hydraulic components for farm machines, seals for harvesters and tractors, or poultry farm equipment on their own websites. The listing does not verify a factory or tested performance.
Lists agricultural machinery castings among its casting products.
Product scope checked 2026-10-11
Lists painted seeder parts and agricultural equipment components among its castings.
Product scope checked 2026-10-11
Lists agricultural machinery as an application field for its hydraulic pumps and valves.
Product scope checked 2026-10-11
Lists hydraulic components for tractors, harvesters, seeders and farm lifting equipment.
Product scope checked 2026-10-11
Lists seeding knife points and agricultural machinery parts among its castings.
Product scope checked 2026-10-11
Lists agricultural machinery parts, including a sand-cast belt wheel for an agricultural machine.
Product scope checked 2026-10-11
Lists a tractor hydraulic pump and agricultural machinery among its industry solutions.
Product scope checked 2026-10-11
Lists rubber extrusions and seals for combine harvesters, tractors, mowers, balers and tillage and seeding equipment.
Product scope checked 2026-10-11
Lists chicken cages and poultry farming equipment, alongside pellet, oil and flour mill machinery.
Product scope checked 2026-10-11
Lists customised high-strength parts for agricultural machinery.
Product scope checked 2026-10-11
Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
29 CFR 1928.57 requires guarding of PTO shafts, power-driven gears, belts, chains, sheaves, pulleys, sprockets, idlers and revolving shafts, and of functional parts as far as their function allows. [1]
Under 29 CFR 1928.51, agricultural tractors of more than 20 engine horsepower made after October 25, 1976 and operated by an employee need a ROPS and a seatbelt. [2]
Unless otherwise specified, each guard and its supports must withstand the force of a 250 lb person leaning on or falling against it. [1]
29 CFR 1928.52 requires a laboratory energy-absorption test and a field-upset test (which can be omitted with sufficient margin), with low-temperature or Charpy impact requirements for the frame material. [3]
Sources checked 2026-10-12. The three eCFR sections are current US federal rules for agricultural employers and tractor protective frames. Supplier statements come from each company's own website.
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