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Castrol Alpha SP Range

The Castrol Alpha™ SP gear oil range of high quality lubricants are based upon highly refined mineral oil, enhanced with
an advanced extreme pressure additive technology providing outstanding thermal stability and high load carrying capacity. The advanced extreme pressure additive system not only provides high load carrying capacity, but was designed to provide microscopic wear protection. Microscopic wear protection, also known as micropitting protection, is critical in preventing destructive wear at the micro level therefore extending gear life and meeting the evolving demands of smaller and higher output gear boxes.


The Alpha SP range is recommended for the lubrication of industrial gear boxes using forced circulation or splash and oil bath lubrication. They may be used for the lubrication of spur and helical gears and in some lightly loaded worm type gear applications. They have very good viscosity characteristics to ensure that starting torques are not excessively high in cold operating conditions. The additives are compatible with the ferrous and non-ferrous metals used in industrial gear units. The Alpha SP range is fully compatible with nitrile, silicone and fluropolymer seal materials. Alpha SP is classified as follows: DIN Classification is CLP The Alpha SP range meets the requirements of:

  • DIN 51517 Part 3
  • AGMA 9005 – D94
  • US Steel 224
  • David Brown Type E
  • Hansen Transmissions
  • Flender
  • Suitable for Müller Weingarten equipment


Technical Data
 Castrol Alpha SP Range