Filter
Top Products
RAMMER
Light weight, yet durable
and packed with power.
Designed specifically for rammer applications, these engines feature overhead valve (OHV) upright cylinder technology to provide
continuous rated power for demanding rammer applications. Rammer engines are easy starting and lightweight, yet built for high
power, high stress and high performance.
KEY FEATURES
BENEFITS
Ideally balanced, the engine’s upright cylinder reduces swinging movement
and vibration, resulting in less operator fatigue. The cylinder’s vibratory force
moves in the same direction as the rammer itself increasing momentum.
Built with a vibration-proof breather mechanism, thick sheet metal,
and reinforced casting parts with thick walls and ribs, rammer engines
are durable to withstand demanding environments.
• Electronic ignition with automatic timing adjustment
for easier starting.
• Lightweight design increases mobility.
• Vibration-proof breather mechanism maintains separation
between oil and breather air enabling any position operation
and transportation without concern for contamination.
DESIGNED SPECIFICALLY FOR RAMMERS
REINFORCED POWER
RAMMER ENGINE
#3 - Vertical cylinder design
maintains an excellent center
of gravity to efficiently transmit
power to the ground, ensuring
performance second to none.
#4 - Specific rammer design
ensures exceptional and reliable
performance in a durable,
sustaining package.
#2 - Dual ball bearing crankshaft
support provides reliable
performance even in demanding
rammer applications.
#1 - Aluminum alloy block
with cast-iron cylinder liners
for durability.
1 Cast-iron cylinder liners
2 Dual ball bearing crankshaft support
3 Vertical cylinder design
4 Specific rammer design
Rammers present a special engineering challenge. The engine must withstand both the vibration of the compactive force
and the high dirt and dust environment. Additionally, rammer engines require a high degree of specialized design to integrate
with the rest of the machine for maximum performance. The rammer designs require that the entire machine be balanced
on the center of the foot in both the front to back axis and side to side axis. Since the engine is mounted to the side of the
leg of the rammer, the lesser the width (W) of the engine the less the rammer needs to be angled (A) forward to balance the
machine over the foot. As the rammer angle (A) is increased, the compaction force (F1) that impacts the ground is reduced
and the backward force (F2) increases – propelling the rammer forward and reducing compactive force. To maximize the
compaction force, Subaru rammer engines are designed specifically for rammer applications. All Subaru rammer engines
are balanced close to the mounting face and also are balanced on the side to side axis for best compaction performance and
easy operation.
F1
F2
A
W
• Reinforced casting parts are strong enough to endure
the toughest conditions.
• Heavy-duty casing with cross bracing ensures durability
in demanding rammer applications.