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Kendrion Electromagnetic Clutches for A/C Cooling Systems

Robust, automotive standards, supporting leading compressors.

Kendrion’s compressor clutches are used throughout the world in bus/coach applications under the harshest conditions – to the fullest satisfaction of our customers.

The clutches are designed to fit all significant compressor types on the market and are available as shaft-mounted or housing mounted models.

Shaft-mounted clutches for A/C compressors

The advantages at a glance:

  • Easy installation
  • Slim designs possible
  • Weight-optimization possible with aluminium pulleys
  • Service-friendly through use of standard ball bearings
  • Wide range of pulley diameters possible, owing to the ingenious design
  • Even small pulley diameters possible for increased weight reduction
  • Clutches for 2-cylinder compressors
  • Clutches for 4-cylinder & 6-cylinder compressors

LA21 / LA28 / LA30

Applications

– Bock FKX20
– Bock FKX30

Speed

Max. permissible: 3,500 rpm

Voltage

12 V and 24 V

LA16 / LA25 / LA26

Applications

– Bock FKX40
– Bock FKX50/460…775
– Bock FKX50/830
– Bock FKX50/980
– Bitzer 4UFC(Y)…4NFC(Y)
– Bitzer 6UFC(Y)…6TFC(Y)
– Bitzer 6PFC
– Bitzer 6NFC

Speed

Max. permissible: 3,500 rpm

Voltage

12 V and 24 V

Housing-mounted clutches for A/C compressors

The advantages at a glance:

  • Maintenance-friendly
  • Slim designs possible
  • No false brinelling, as the bearing rotates both when the clutch is engaged and disengaged
  • Belt forces are absorbed by the compressor housing, relieving the shaft and thus the compressor bearing from belt forces
  • Durable and robust through high wear reserve
  • Clutches for Thermoking compressors
  • Clutches for Bitzer compressors
  • Clutches for Valeo compressors

LA18

Applications

– X426/X430
– S391/S616

Speed

Max. permissible: 3,500 rpm

Voltage

12 V and 24 V

LA400 / LA600

Applications

– F400
– F600

Speed

Max. permissible: 3,500 rpm

Voltage

12 V and 24 V

LA18 / LA21

Applications

– TM65
– TM55
– TM43
– TM31

Speed

Max. permissible: depending on compressor between 4,000 and 6,000 rpm

Voltage

12 V and 24 V

The plus for your clutch – Micro-pulsing

In very tough and demanding applications, the lifetime of the ball bearings can be shortened due to the long- time engagement of the clutch. The longer the clutch is engaged, the more the risk of lubrication shortage of the rolling elements increases. As a result, the ball bearing surface can be damaged. The risk of ball bearing damages due to idle marks can occur in all shaft mounted clutches.

The Kendrion solution lets the bearing roll off despite the clutch is engaged. An electronic circuit, that opens the clutch for a brief moment causes a micro movement of the rolling elements and ensures the lubrication of the rolling bearings.

Thanks to the intelligent control technology this function can be guaranteed reliably and independent of the wear of the clutch without causing relevant wear itself.

Technical details

Dimension

826.5 mm

Operating temperature

-40°C up to 120 °C

Operating voltage

18V up to 32V

Cable length

600 mm

Specifications
Discharge capacity 31cc

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