The Case IH JX85 Maxxima tractor PTO horsepower is 70 hp | 52.2 kW, and the drawbar horsepower is 58.4 hp | 43.5 kW.
PTO HP70 hp | 52.2 kW
Drawbar HP58.4 hp | 43.5 kW
Displacement238.5 ci | 3.9 L
Case IH JX85 Maxxima Horsepower Specs
PTO horsepower claimed
70 hp | 52.2 kW
PTO horsepower tested
71.1 hp | 53.0 kW
Drawbar horsepower tested
58.4 hp | 43.5 kW
Case IH JX85 Maxxima Useful Horsepower Calculations
Drawbar-to-PTO power ratio
83.4% drawbar hp vs PTO hp
Engine size per PTO horsepower
3.4 ci per PTO hp
PTO horsepower per liter
17.9 PTO hp per L
Rated speed per PTO horsepower
35.7 rpm per PTO hp
Case IH JX85 Maxxima Engine Specs
Engine model
year
Displacement
238.5 ci | 3.9 L
Bore and stroke
4.094×4.528 inches | 104 x 115 mm
Compression
17.0:1
Rated RPM
2500
Case IH JX85 Maxxima Fuel, Cooling, Starting & Service Specs
Starter volts
12
Battery volts
12
Case IH JX85 Maxxima Horsepower Comparison Charts
PTO horsepower comparison
This model
70 hp
Average
65 hp
Low
35 hp
High
105 hp
Drawbar horsepower comparison
This model
58.4 hp
Average
55 hp
Low
30 hp
High
95 hp
Displacement comparison
This model
238.5 ci
Average
260 ci
Low
150 ci
High
380 ci
Rated RPM comparison
This model
2,500 rpm
Average
2,200 rpm
Low
1,800 rpm
High
2,700 rpm
Engine size per PTO HP
This model
3.4 ci/hp
Average
3.5 ci/hp
Low
2.2 ci/hp
High
5.8 ci/hp
Benchmarks use practical low, average and high ranges for the utility tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
Case IH JX85 Maxxima Horsepower FAQ
How much PTO horsepower does the Case IH JX85 Maxxima have?
The listed PTO output is 70 hp, close to the 65 hp benchmark average. Use 70 PTO hp as the practical implement-sizing number.
How much drawbar horsepower does the Case IH JX85 Maxxima have?
The listed drawbar output is 58.4 hp, close to the 55 hp benchmark average. It gives a realistic pulling-power figure of about 58.4 hp.
Is the Case IH JX85 Maxxima better judged by PTO hp or drawbar hp?
The drawbar output is about 83.4% of PTO output, comparing 58.4 drawbar hp with 70 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Case IH JX85 Maxxima engine?
The engine displacement is 238.5 ci, close to the 260 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the Case IH JX85 Maxxima engine stressed for its PTO horsepower?
The engine has about 3.4 cubic inches per PTO hp, using 238.5 ci and 70 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the Case IH JX85 Maxxima make?
The output density is about 17.9 PTO hp per liter, using 70 PTO hp and 3.9 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
What rpm is the Case IH JX85 Maxxima rated at?
The rated speed is 2,500 rpm, above the 2,200 rpm benchmark average. A higher 2,500 rpm rating can make power well but may feel busier under load.
Official information note
Horsepower and engine specs can vary by year, market, engine option, fuel system, test standard and tractor configuration. Check the operator manual, spec plate, parts book and official caseih.com website before buying parts, sizing implements or making repair decisions.
