Cam 11,75

Cam 410281175 with an angle of 11.75°, made of aluminium, is a drive component of the Kranzle 2160 TS/TST pressure washer pump. Mounted on the pump shaft, with a thrust bearing pack underneath it and the pump housing further down. The rotary motion of the motor turns the cam – its 11.75° angle generates the motion transferred through the bearing onto the pump pistons, converting shaft rotation into their reciprocating movement.

Application

The cam is mounted on the shaft of the 2160 TS/TST pump. With each shaft rotation, the cam, set at an 11.75° angle, moves the pistons via the thrust bearing resting against its surface. The 11.75° angle determines piston stroke, and through that, the flow rate and pressure characteristics of the pump.

Replaced during cam assembly repair – after identifying wear on the cam surface, damage to the thrust bearing, or as part of a comprehensive 2160 TS/TST pump drive overhaul.

Symptoms – when to replace

• Vibration or irregular pump rhythm not caused by piston seals or valves – suggesting wear of the cam working surface or thrust bearing.
• Visible signs of seizure, scoring or dull wear marks at the contact surface between the cam and the bearing.
• Axial play on the shaft with the cam fitted – wear of the component at the mounting position or in the bearing pack.
• Damage to the thrust bearing combined with signs of heating on the cam – bearing seizure frequently causes secondary damage to the cam surface.
• Corrosion or mechanical damage to the aluminium body – particularly at points of contact with the steel components of the bearing pack in the presence of moisture.

Compatibility

Cam for the Kranzle 2160 TS/TST pressure washer pump, angle 11.75°, aluminium body. Verify the exact compatibility range – including any throttle or non-throttle version – by reference number 410281175.

[faq]

Why does the cam for the 2160 TS/TST have an angle of 11.75° while the 1152 TS/TST has only 9.6° – what does this reveal about the difference between these models?|A larger cam angle means a longer piston stroke at the same shaft speed. The 2160 TS/TST is a washer with a higher water output or pressure than the 1152 TS/TST – the 11.75° angle defines the pumping characteristic appropriate for this model. Swapping cams between models would push the pump's operating parameters outside the design range and could lead to motor overload or incorrect pressure.

Is the 11.75° angle of this cam close to the 10.8° or 12.0° angles from the AQ series – can they be used interchangeably?|No – these are different pump series with different reference numbers and shaft mounting geometry. Cams 40523108 (10.8°, AQ) and 40523120 (12.0°, AQ) belong to the series with prefix 40523, while 410281175 has prefix 41028 and fits the 2160 TS/TST model. The angle alone is not a sufficient interchangeability criterion – pump series and mounting geometry take precedence.

How to identify early wear of an aluminium cam in the 2160 TS/TST model?|Aluminium is softer than steel, so early race wear appears as dull, slightly concave marks at the bearing contact point – visible in raking light when the bearing pack is disassembled, before distinct scoring develops. Also check the thrust bearing rotation by hand – resistance or grating indicates damage to the bearing or the cam race. Assess the contact zone between the aluminium and the steel bearing pack components for galvanic corrosion – moisture in this area accelerates wear.

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