The Massey Ferguson Australia MF1840 reference lists a 356 × 457 mm bale cross-section and 100 plunger strokes per minute. At that speed, 30 minutes would contain 3000 strokes. The result is not 3000 bales: feed, slices per bale, selected length and crop conditions determine bale output.
1840 plunger speed is not bale output
Match the specific baler, market and installed pickup/tying arrangement when comparing records. A small-square baler’s plunger speed, a round baler’s diameter range and a swather’s cutting width describe different work. They cannot be ranked as one capacity number.
745 is a baler designation here
The Hesston 745 record describes a PTO-driven round baler. Its baler reference lists bale dimensions, belts and tying details. A same-number articulated truck’s engine, axles or body volume have no bearing on this machine.
For an actual tractor match, use the baler’s required power basis, PTO speed, hitch and hydraulic instructions. For a used purchase, identify the serial range and inspect guards, pickup, belts or chamber components, tying system and service records under the machine’s isolation procedure.