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Stromag Periflex® VN Coupling for Crawler Dozer
A major global construction equipment manufacturer needed a coupling solution
for its largest bulldozer. The massive 24-ton, 214 HP machine features a
135 in. wide blade and can be used for heavy dozing as well as fine grading.
The coupling connects the main diesel engine to the hydraulic pump that powers
the propulsion tracks and all the hydraulic cylinders that provide blade lift, angle
and tilt functionality.
To meet the challenging application requirements, Stromag supplied
Periflex® VN (PVN) disc couplings, which eliminated the torsional vibrations
associated with a broad engine speed range. The PVN 350 units supplied feature
a maximum torque of 3,000 Nm (2,212 lb.ft.).
Stromag’s PVN plug-in, highly flexible elastomer disc couplings feature a linear
rigidity characteristic that maintains the same stiffness regardless of torque input,
which is ideal for diesel engine drives. Its plug-in design provides significant
installation advantages, particularly for close-coupled applications, by offering
blind-fit assembly where a gearbox bellhousing is mounted directly to the engine
bellhousing without access to the flywheel or gearbox input shaft.
Highlights
- Highly flexible elastomer
disc couplings with linear
spring characteristics
- Axial plug-in connection
for easy installation and
removal, for the entire
coupling and the flexible
element
- Torque range:
118 to 46,466 lb.ft.
(160 to 63,000 Nm)
- Steel hubs
- Aluminum alloy flywheel
connection ring