SAE 18
SAE 18 Flywheel Adapter – For CENTAMAX-G 4600 Couplings
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The SAE 18 flywheel adapter is an OEM interface component developed by CENTA Germany to connect CENTAMAX-G 4600 elastic couplings with engines equipped with an SAE 18 flywheel interface (SAE J620).
This adapter ensures accurate centering, correct bolt-circle alignment, and stable torque transmission in high-power generator and industrial drive systems.
For the CENTAMAX-G 4600 size, SAE 18 adapters are typically used in large diesel generator sets and heavy industrial engines where high torque capacity and precise alignment are critical.
SAE 18 Dimensional Data
- SAE Size: 18
- XE – Outer Diameter: 22.500 in (572 mm)
- XF – Inner Diameter / Bolt Circle: 21.38 in (543 mm)
- XG – Depth (Pilot / Distance to Flywheel Face): 0.62 in (16 mm)
(Note: depending on engine design, this value may be specified as 0) - Bolt Holes: 6 tapped holes
All dimensions follow the SAE J620 standard, ensuring compatibility with SAE 18 flywheels used by major engine manufacturers.
Fitment & Compatibility
- Adapter Type: CM-G-4600 SAE 18
- Compatible Couplings: CENTAMAX-G 4600 NR (all Shore hardness options: 50 / 60 / 70 / 72 / 75)
- Flywheel Standard: SAE 18
Typical Applications:
- Large diesel generator sets
- Industrial and utility power units
- Marine auxiliary gensets
- Heavy stationary and mobile power systems
Designed specifically for CENTAMAX-G Size 4600, this adapter allows direct installation without modification and preserves the torsional characteristics defined by CENTA engineering.
Why the Correct SAE 18 Adapter Is Critical
Using the correct OEM SAE 18 adapter ensures:
- proper flywheel centering
- correct axial positioning of the coupling
- stable vibration and torsional behavior
- long service life of the elastic element
- safe torque transfer under high load
Incorrect or non-OEM adapters may lead to misalignment, elevated vibration levels, and premature failure in high-value generator installations.