ZF 280 (IRM 280 PL-1)
TECHNICAL DATA
Configuration:   Vertical Offset
Mounting:   Direct to Engine.
Bell Housings:  SAE 2, SAE 3, SAE CAT 3
Weight (approx. dry):  73 kg (161 lbs)
Oil capacity (approx.):  4 litres (4.2 US quarts)
Fluid Grade:   SAE 30
Standard Input Rotation:  Anticlockwise engine rotation when looking at the flywheel end.

*Dimensions and weights refer to transmissions with bell housings but excluding options such as: trolling valves, power take-offs, propeller shaft companion flanges,torsional couplings etc.

PLEASURE DUTY CLASSIFICATION

MODEL

RATIOS

MAXIMUM INPUT POWER

2300 rpm

2800 rpm

3200 rpm

HP/rpm

ft.lb

kW/rpm

Nm

HP

kW

HP

kW

HP

kW

ZF 280
(IRM 280 PL-1)
0.814+
1.000
1.214+		 1.514
1.719+
2.000

431

322

525

391

600

447

0.1875

985

0.1398

1335

2.478

372

277

452

337

517

386

0.1616

849

0.1205

1151

3.000+

352

263

429

320

490

365

0.1531

804

0.1142

1091
Min/max engine speed: 400/3200 rpm
LIGHT DUTY CLASSIFICATION
MODEL RATIOS MAXIMUM INPUT POWER
2100 rpm 2500 rpm 2800 rpm HP/rpm ft.lb kW/rpm Nm
HP kW HP kW HP kW
ZF 280
(IRM 280 PL-1)
0.814+
1.000
1.214+		 1.514
1.719+
2.000
327 244 390 291 436 325 0.1558 818 0.1162 1110
2.478 306 228 364 271 407 304 0.1455 764 0.1085 1036
3.000+ 289 215 344 257 385 287 0.1376 723 0.1026 980
Min/max engine speed: 400/3200 rpm
MEDIUM DUTY CLASSIFICATION
MODEL RATIOS MAXIMUM INPUT POWER
2100 rpm 2500 rpm 2800 rpm HP/rpm ft.lb kW/rpm Nm
HP kW HP kW HP kW
ZF 280
(IRM 280 PL-1)
0.814+
1.000
1.214+		 1.514
1.719+
2.000
255 190 303 226 339 253 0.1212 637 0.0904 863
2.478 238 177 283 211 317 236 0.1132 594 0.0844 806
3.000+ 227 169 270 202 303 226 0.1081 568 0.0806 770
Min/max engine speed: 400/3200 rpm
CONTINUOUS DUTY CLASSIFICATION
MODEL RATIOS MAXIMUM INPUT POWER
1800 rpm 2100 rpm 2400 rpm HP/rpm ft.lb kW/rpm Nm
HP kW HP kW HP kW
ZF 280
(IRM 280 PL-1)
0.814+
1.000
1.214+		 1.514
1.719+
2.000
187 140 218 163 249 186 0.1039 546 0.0775 740
2.478 175 130 204 152 233 174 0.0971 510 0.0724 691
3.000+ 161 120 188 140 215 160 0.0894 470 0.0667 637
Min/max engine speed: 400/2800 rpm