Hydraulic Release Bearings

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Wilwood Pull Type Slave Cylinder 7/8 Inch Bore

Wilwood Pull Type Slave Cylinder 7/8 Inch Bore

Pull type slave cylinder which is ideal for clutch actuation and features a long stroke ensures full release of the clutch.The cylinder body is constructed from high strength billet aluminium which is plated for a tough, anti-corrosion finish.Recommended master size : 0.75" Bore Size : 7/8"Area : 0.44"Stroke : 1.38"Volume : 0.60cu/inOverall Length : 11.70"Inlet Port : 1/8" NPTView more

$91.78

1 retailer

Tilton Hydraulic Clutch Flow Control Valve

Tilton Hydraulic Clutch Flow Control Valve

This flow control valve from Tilton is designed to help prevent shock loading on the transmission from abrupt clutch engagement. The valve allows the clutch to slip slightly during engagement, thus reducing shock loads and increasing the life of drive train components.View more

$249.53

1 retailer

Quarter Master Hydraulic Release Bearings – Universal

Quarter Master Hydraulic Release Bearings – Universal

Quarter Master have designed and manufactured a range of hydraulic release bearings to suit a range of applications. The Quarter Master range is renowned for high quality materials and top level performance, and these hydraulic release bearings are no exception. There are 4 different designs available to choose from depending on the application. The first of which is a floating design that is designed for use with multi-disc clutches with large shaft applications. It features a radius faced bearing and return spring to minimise continuous contact of the bearing and clutch spring fingers. It is also universally adaptable to be used with either Quarter Master or Original Equipment style bellhousings.Also available is the Street Stock, universally adaptable bearing that is designed to be used with OE style clutches and will work with the high pressure clutch systems that can be found on modern vehicles. It can also be adapted to fit most rear wheel drive transmissions but may require slight modifications for some specific applications.The Tri-Lite hydraulic release bearing has been designed with weight in mind. As a result, it weighs in at a mere 1.3lbs. CNC-Machined from billet aluminium and hard-coat anodised, the bearing is extremely strong and is able to resist both corrosion and wear.The final type of hydraulic release bearing that is available is a universal bearing that is designed to be adapted to a multitude...View more

$505.74

1 retailer

Quarter Master Hydraulic Release Bearings – Tri-Lite

Quarter Master Hydraulic Release Bearings – Tri-Lite

Quarter Master have designed and manufactured a range of hydraulic release bearings to suit a range of applications. The Quarter Master range is renowned for high quality materials and top level performance, and these hydraulic release bearings are no exception. There are 4 different designs available to choose from depending on the application. The first of which is a floating design that is designed for use with multi-disc clutches with large shaft applications. It features a radius faced bearing and return spring to minimise continuous contact of the bearing and clutch spring fingers. It is also universally adaptable to be used with either Quarter Master or Original Equipment style bellhousings.Also available is the Street Stock, universally adaptable bearing that is designed to be used with OE style clutches and will work with the high pressure clutch systems that can be found on modern vehicles. It can also be adapted to fit most rear wheel drive transmissions but may require slight modifications for some specific applications.The Tri-Lite hydraulic release bearing has been designed with weight in mind. As a result, it weighs in at a mere 1.3lbs. CNC-Machined from billet aluminium and hard-coat anodised, the bearing is extremely strong and is able to resist both corrosion and wear.The final type of hydraulic release bearing that is available is a universal bearing that is designed to be adapted to a multitude...View more

$389.27

1 retailer

Quarter Master Hydraulic Release Bearings – Street Stock

Quarter Master Hydraulic Release Bearings – Street Stock

Quarter Master have designed and manufactured a range of hydraulic release bearings to suit a range of applications. The Quarter Master range is renowned for high quality materials and top level performance, and these hydraulic release bearings are no exception. There are 4 different designs available to choose from depending on the application. The first of which is a floating design that is designed for use with multi-disc clutches with large shaft applications. It features a radius faced bearing and return spring to minimise continuous contact of the bearing and clutch spring fingers. It is also universally adaptable to be used with either Quarter Master or Original Equipment style bellhousings.Also available is the Street Stock, universally adaptable bearing that is designed to be used with OE style clutches and will work with the high pressure clutch systems that can be found on modern vehicles. It can also be adapted to fit most rear wheel drive transmissions but may require slight modifications for some specific applications.The Tri-Lite hydraulic release bearing has been designed with weight in mind. As a result, it weighs in at a mere 1.3lbs. CNC-Machined from billet aluminium and hard-coat anodised, the bearing is extremely strong and is able to resist both corrosion and wear.The final type of hydraulic release bearing that is available is a universal bearing that is designed to be adapted to a multitude...View more

$376.53

1 retailer

Quarter Master Hydraulic Release Bearings – Floating Style

Quarter Master Hydraulic Release Bearings – Floating Style

Quarter Master have designed and manufactured a range of hydraulic release bearings to suit a range of applications. The Quarter Master range is renowned for high quality materials and top level performance, and these hydraulic release bearings are no exception. There are 4 different designs available to choose from depending on the application. The first of which is a floating design that is designed for use with multi-disc clutches with large shaft applications. It features a radius faced bearing and return spring to minimise continuous contact of the bearing and clutch spring fingers. It is also universally adaptable to be used with either Quarter Master or Original Equipment style bellhousings.Also available is the Street Stock, universally adaptable bearing that is designed to be used with OE style clutches and will work with the high pressure clutch systems that can be found on modern vehicles. It can also be adapted to fit most rear wheel drive transmissions but may require slight modifications for some specific applications.The Tri-Lite hydraulic release bearing has been designed with weight in mind. As a result, it weighs in at a mere 1.3lbs. CNC-Machined from billet aluminium and hard-coat anodised, the bearing is extremely strong and is able to resist both corrosion and wear.The final type of hydraulic release bearing that is available is a universal bearing that is designed to be adapted to a multitude...View more

$269.03

1 retailer

Girling Repair Kit For Hewland Slave Cylinder

Girling Repair Kit For Hewland Slave Cylinder

Cylinder rebuilt kit containing piston seal and dust seal to suit Hewland type slave cylinders. View more

$21.65

1 retailer

Alcon Seal Kit For Hydraulic Release Bearings

Alcon Seal Kit For Hydraulic Release Bearings

These Seal Kits from Alcon are designed to fit Alcons' range of hydraulic release bearings. The kit covers each bearing diameter and offer an alternative to replacing the whole release bearing.View more

$42.13

1 retailer

Alcon Hydraulic Release Bearings – Ø52mm Diameter

Alcon Hydraulic Release Bearings – Ø52mm Diameter

Alcon's range of hydraulic release bearings are designed to replace Saab type units and have a durable hard anodised finish. Their compact design means that they are low in weight, making it ideal for motorsport applications. The bearing itself is high speed and self centring, maximising the performance of the clutch in demanding situations. The bearing is also replaceable for when a change is needed. The maximum torque of all the bearings is 59.9mm.Available in a range of different diameters.View more

$634.00

1 retailer

Alcon Hydraulic Release Bearings – Ø44mm Diameter

Alcon Hydraulic Release Bearings – Ø44mm Diameter

Alcon's range of hydraulic release bearings are designed to replace Saab type units and have a durable hard anodised finish. Their compact design means that they are low in weight, making it ideal for motorsport applications. The bearing itself is high speed and self centring, maximising the performance of the clutch in demanding situations. The bearing is also replaceable for when a change is needed. The maximum torque of all the bearings is 59.9mm.Available in a range of different diameters.View more

$600.53

1 retailer

Alcon Hydraulic Release Bearings – Ø38mm Diameter

Alcon Hydraulic Release Bearings – Ø38mm Diameter

Alcon's range of hydraulic release bearings are designed to replace Saab type units and have a durable hard anodised finish. Their compact design means that they are low in weight, making it ideal for motorsport applications. The bearing itself is high speed and self centring, maximising the performance of the clutch in demanding situations. The bearing is also replaceable for when a change is needed. The maximum torque of all the bearings is 59.9mm.Available in a range of different diameters.View more

$634.00

1 retailer

A P Racing Release Bearings – Standard 40mm ID Outer Race Rotates 54mm Fulcrum

A P Racing Release Bearings – Standard 40mm ID Outer Race Rotates 54mm Fulcrum

Suitable for use with AP Racing clutches, these release bearings are capable of withstanding high loads alongside continuous high speed temperature operation, making them ideal for use in motorsport situations where high performance is expected. A steel cage with hardened steel shell construction adds durability while a special high temperature grease ensures that the bearings operate at their maximum capability even in demanding situations. Further features include a radius type release fulcrum and that they are suitable for all straight fingered diaphragm spring clutches.The range of release bearings available include options with a 38mm, 50mm or 54mm diameter release fulcrum which make them suitable for all AP Racing Carbon / Carbon, Sintered or Cerametallic race clutches. A List of individual sizes and applications can be found below. STANDARD RELEASE BEARING 35mm Inside Diameter – Outer Race RotatesCP3457-1 Release Fulcrum Dia 50mm – Suitable for use with most Ø115, Ø127 & Ø140mm racing clutches. CP3457-2 Release Fulcrum Dia 54mm – Suitable for use with most Ø184, Ø200 & Ø215mm racing clutches.STANDARD RELEASE BEARING 40mm Inside Diameter – Outer Race RotatesCP3457-9 Release Fulcrum Dia 50mm – Suitable for use with most Ø115, Øl27 & Ø140mm racing clutches.CP3457-10 Release Fulcrum Dia 54mm – Suitable for use with most Ø184,...View more

$111.12

1 retailer

What are Hydraulic Release Bearings?

Smoothness is everything; just ask seasoned drivers. If there's something that can ruin your smooth ride, it's a faulty clutch, which can be caused by worn out hydraulic release bearings (HRBs), also referred to as hydraulic throwout bearings. Hydraulic Release Bearingss are used with push-type clutches. They are designed to help you eliminate the need for external slave cylinders, spacers, mechanical linkages, and pivot balls. They are also available for use with most OE-type clutches as well as smaller diameter racing clutches.

How does Hydraulic Release Bearing Work?

The release bearing is at the heart of the clutch operation and operates the clutch in a manual transmission. Hysdraulic Release Bearings are commonly found in mid- and rear-engine vehicles. The Hydraulic release bearings typically work like a mini hydraulic brake system. In HRBs there's no clutch fork or slave cylinder, rather, the clutch master cylinder applies hydraulic pressure directly to the bearing, engaging the pressure plate fingers, which in turn disengages the clutch disc from the flywheel. All the mechanical parts found in other systems are virtually replaced by a hose running from the clutch master cylinder directly to the master cylinder.

Why do you Need Hydraulic Release Bearings?

The biggest advantage of using hydraulic linkage is the fact that a small amount of pedal force is capable of manipulating what would normally be a heavy clutch with a mechanical linkage. Other benefits include:

  • - They offer a much smoother clutch operation both in modified and standard vehicles
  • - Reduces shock to the drivetrain
  • - They are compact
  • - Less moving parts
  • - Easy to control and offer flexible driving
  • - Offer consistent pressure, which ensures easier and smoother engagement
  • - They are quite simpler compared to the slave cylinder systems

Common Symptoms of a Bad Hydraulic Release Bearing

The car is made of several complex systems that must properly function together for optimal performance results. Release bearings seem insignificant, but they play in important role in ensuring your car functions. As we've already established, bearings work in connection to the clutch pedal, which means, any malfunctioning can be observed when the clutch is operated. For starters, you will hear a grinding, sharp whirring, or rattling sound whenever you depress the clutch, which slowly fades as you release it. If the problem continues, you will experience more serious symptoms like very stiff clutch pedals, refusal to shift gears, complete failure of the clutch mechanism, and even cause the fingers of the pressure plate to quickly wear.

Shopping for Hydraulic Throwout Bearings

There are several designs of HRBs available in the market. First, there's the floating bearing. These bearings work pretty much like regular release bearings, except for the fact that they're engaged via hydraulics rather than of mechanics. Then there's the fixed release bearing, which is either physically bolted to the inside of the bell housing, or to the transmission. High-performance HRBs provide a quick clutch response in that the bearings self-adjust for wear once they are properly adjusted for clearance. When shopping for HRBs, you should go for ones that fit your needs because different types are best suited for different applications. To ensure you get superior performance, ensure your new selection is a direct fit to your car model, not to mention, designed to meet or exceed OEM standards.

Prevention Tips

In case your car suffers any of the above symptoms; you should get it fixed immediately. This will keep the vehicle functioning efficiently, safe, and avoid spending a fortune on repairs and replacements. To help you avoid such severe effects of a bad hydraulic throwout bearing, here are a few prevention tips:

Follow up on routine maintenance: The best way to ensure the HRBs are well-serviced at all times is through ongoing inspections. Ultimately, this prolongs your car's life and ensures any failures are detected early on before the damaging effects occur. This procedure also involves routine clutch replacement, which should also include replacement of the release bearing.

Adjust your driving habits: The easiest way to prolong the HRBs' lifespan is to adjust the way you engage the clutch. Minimize the amount of time the clutch pedal is depressed. For instance, when you stop at the red light you could bring the car to neutral and release the clutch pedal, rather than keeping your foot pressed down on the clutch.

Hire an automotive expert: Bearing problems can a bit difficult to detect since a faulty clutch can be caused by several other issues. That's why it's best to consult a professional in case of any issues to ensure your car is getting the right fix.