Eccentric Shaft
The eccentric shaft is a fundamental and critically important component in a jaw crusher, serving as the primary driving element that converts rotational motion into the reciprocating action necessary for crushing rock, ore, and other materials. Its design and integrity are paramount to the machine’s performance, efficiency, and operational lifespan.
Acting as the central “backbone” and driving axle of the crusher, the eccentric shaft’s primary function is to generate the precise elliptical motion of the movable jaw plate. Unlike a standard rotational shaft, it features an offset section—the eccentric throw—which is the mechanical heart of the crushing action. This throw is strategically located between two massive flywheels that store inertial energy, ensuring smooth operation under fluctuating load conditions.
The shaft is supported at both ends by heavy-duty bearings housed in the crusher frame. When powered by the motor and V-belt drive, the shaft rotates. Due to its offset eccentric section, the rotation creates an oscillating movement in the pitman (connecting rod) and the toggle plate system attached to it. This oscillation is transmitted directly to the movable jaw, causing it to alternately approach and retreat from the fixed jaw. This cycle compresses and fractures the material in the crushing chamber on the forward stroke (closing) and allows the crushed product to discharge by gravity on the return stroke (opening).
Why Choose SAIKUANG Casting Eccentric Shaft
Genuine Alternative Spare Parts
Jaw Crusher Eccentric Shafts Made by SAIKUANG Casting
SAIKUANG Casting manufactures, stocks and supplies interchangeable aftermarket jaw crusher spare parts of an fully extensive range of OEM including but not limited to: Metso®, Sandvik®, Extec®, Telsmith®, Terex®, Powerscreen®, Kleemann®, Komatso®, Kemco®, Finlay® and Fintec®.
SAIKUANG Casting Alternative Eccentric Shafts Avaliable For Below Brands & Models
| METSO Nordberg C Series | METSO Lokotrack LT Series | SANDVIK CJ Series | SANDVIK CM Series | SANDVIK JM Series | SANDVIK UJ Series | SANDVIK EXTEC & FINTEC |
|---|---|---|---|---|---|---|
| C106 C116 C120 C130 C150 C160 C200 |
LT96 LT106 LT116 LT120 LT120E LT130E |
CJ815 CJ615 CJ613 CJ612 CJ412 CJ411 |
CM1208F CM1208i CM1211 CM1511 |
JM1107 JM1108 JM1208 JM1211 JM1312 JM1511 JM1513 JM806 JM907 |
UJ310 UJ440E UJ440i(CM1208i) UJ540(CM1211) UJ640(CM1511) |
C-10 C-10+ C-12 C-12+ QJ240/241 QJ330/331 QJ340/341 QJ341+ |
| KLEEMANN | KOMATSU | TELSMITH | TEREX POWERSCREEN | TEREX FINLAY | TEREX Cedarapids | KEMCO |
| MC100 R EVO MC110 R EVO MC110 Z EVO MC120 Z PRO MC125 Z MC140 Z MC160 PRR |
BR380JG | H2238 H2550 H3244 H3450 3258 Hydraulic 3858 Hydraulic Iron Giant Series 3042/3055/3648 |
METROTRAK PREMIERTRAK 330 PREMIERTRAK 300 & R300 PREMIERTRAK 400X & R400X PREMIERTRAK 600 & 600E |
J-960 J-1160 J-1170AS J-1170 J-1175 J-1280 J-1480 |
JC2236 JW42 JW55 JC3660 JS3750 JS4552 JC5460 MJ400R MJ42 MJ47 MJ55 CRJ3042 CRJ3255 CRJ3750 |
F3 F4 F80N STK4 STK5 A6S A7S A9S |
*NOTE: All manufacturer names, part numbers, model numbers and descriptions are used for reference and identification purposes only, they are owned by the respective machine manufacturer. All parts supplied are manufactured and warranted by SAIKUANG and are not manufactured by or purchased from the Original Equipment Manufacturer. SAIKUANG has no association with the OEM and do not intend to give this impression.