3100 Series Ultra Heavy-Duty Mechanical Spring Starter (15L–23L Engine Range)

Model Positioning

Engineered specifically for high-displacement, heavy-duty multi-cylinder diesel engines from 15.0L to 23.0L, the 3100 Series is the high-capacity benchmark in pure mechanical emergency cranking systems. Built to break through severe breakaway friction and high-compression flywheel inertia on large power generators, heavy marine propulsion/auxiliaries, large mining rigs, and high-pressure pumping stations, the 3100 Series delivers ultimate torque density for mission-critical black-start operations where no power failure can be tolerated.

Series-Specific Innovations & Highlights

Ultra High-Torque Energy Storage Core: Fitted with extra-heavy-duty spring packs and reinforced drive mechanisms to generate maximum instantaneous breakaway torque required for 15–23L engine inertia.
Heavy-Inertia Drivetrain Protection: Integrated shock-absorbing torque limiters and hardened alloy steel planetary gearing engineered to withstand high-impact energy release without fatigue.
Mission-Critical Power Resiliency: Independent of external electrical power, battery condition, solenoid relays and air pressure systems, so starting is unaffected by blackouts.
Spark-Free Operation: Zero electrical spark hazard, suited to offshore oil rig, underground mining and hazardous chemical facility setups.
Flexible SAE Installation: Standard SAE heavy-duty flange mounting allows direct bolt-on replacement of an electric starter, with no modification to the flywheel housing. For twin-starter installation, a flywheel housing with two starter positions is required, and a custom dual-lug housing can be made for engines that have only one.

Engine Application Matrix

Field-matched and field-proven on high-capacity (15L–23L) heavy diesel platforms from world-class engine builders, including Cummins (K19/QSK19 series), Caterpillar (3400/C15/C18 series), MTU, Weichai, Yuchai, Perkins, Volvo Penta, and Mitsubishi.

Technical Specifications

Model Series	3100 Series
Engine Displacement Range	15L to 23L
Charging Mechanism	Manual Crank Storage (Ultra High-Stress Reinforced Spring Array)
Flange Standards	SAE 1 / SAE 2 / SAE 3
Rotation Option	Clockwise (CW) / Counter-Clockwise (CCW)
Operating Environment	High and low temperature tolerance

View Specs

Parameters

Spring Starter Series		3100 Series
		SHD
		3100
Flange	SAE#	1,2&3
Engine Displacement	Liters (L)/cylinder & Max cylinder numbers	2.5&6
		2.0&8
		1.9&12
Max pinion torque	Nm	167
Max winding torque	Nm	100
Weight	kg	26
Turns to fully wind	turns	2+15
L	mm	368
A	mm	133
B	mm	143