Motorsport Hydraulic Release Bearing (CSC)

SKU: 8831820000XX

Ø Release Diameter
CSC-Order Number

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Motorsport Hydraulic Release Bearing (CSC)

Description

Manufacturer

SACHS Motorsport Release Bearing (CSC)

Concentric slave cylinders and CSC kits for SACHS RCS racing clutches

The SACHS racing concentric slave cylinder (CSC) from ZF Motorsport is a hydraulic clutch release system for modular racing clutches with push-type actuation. It sits concentrically around the gearbox input shaft and actuates the clutch directly via the release bearing.

Depending on the installation layout, the motorsport release system is used as an individual CSC or as a pre-assembled CSC kit with adapter. The individual CSC is selected by release diameter, stroke, mounting pattern, centring, and installed height. The CSC kit adds a suitable adapter to the concentric slave cylinder when the axial position of the release bearing to the clutch also has to be adjusted.

In addition to SACHS RCS racing clutches, this racing concentric slave cylinder can also be used in racing applications with motorsport clutches from other manufacturers such as Tilton or AP Racing, provided the technical setup is suitable.

SACHS RCS racing CSC - concentric slave cylinder for racing clutch | ZF Motorsport

Versions

System: SACHS RCS racing clutch

Component: CSC concentric slave cylinder

Actuation: hydraulic, push-type clutch actuation

CSC release diameter: 38 mm, 44 mm and 49 mm

CSC working ranges: 12 mm and 15 mm stroke

Hydraulic cross-sectional area: 820.7 mm²

CSC variants: different mounting geometries, centring diameters and installed heights

CSC kit: pre-assembled concentric slave cylinder with adapter and mounting screws for axial height adjustment; assigned to the respective base CSC in the variant overview

Note: The correct SACHS RCS racing CSC is selected by release diameter, stroke, mounting pattern, centring diameter, installed height, and available installation space. The decisive factors are clutch version, flywheel, gearbox, actuation system, and the required position of the release bearing to the clutch.

SACHS RCS CSC racing release system - concentric slave cylinder for SACHS RCS racing clutches | ZF Motorsport

Benefits

Developed specifically for racing clutches

Compact concentric slave cylinder for push-type clutch actuation

One-piece housing for high strength and reduced leakage risk

Bearing design for high engine speeds in racing engine operation

Release diameters of 38 mm, 44 mm and 49 mm to suit SACHS RCS clutches

Hydraulic volume to reduce pedal force at high release forces

Special coatings and sealing systems for optimised friction in the actuation system

Also available as a CSC kit with adapter for axial height adjustment between clutch and gearbox

Technology

CSC concentric slave cylinder

Function: The SACHS RCS racing CSC sits concentrically around the gearbox input shaft and actuates the clutch directly via the release bearing. This allows release travel, bearing position, and actuation force to be matched precisely to the respective SACHS RCS racing clutch.

Housing: The housing of the concentric slave cylinder is designed for high release forces, vibration, and thermal load in motorsport. The one-piece design supports strength, tightness, and reproducible function in racing use.

Bearing: The release bearing is matched to high rotational speeds and rapid load changes. It enables stable clutch actuation even during short shift events and under high thermal and mechanical load.

Hydraulics: The hydraulic system must be matched to the master cylinder, pedal travel, line routing, and clutch. A correctly bled CSC ensures consistent actuation, defined pedal force, and precise modulation.

CSC kit: In the pre-assembled CSC kits, the racing CSC is combined with a suitable adapter. The adapter compensates for axial height differences between clutch, flywheel, and gearbox, and positions the release bearing in the required location relative to the clutch. The kits are supplied with the required mounting screws.

SACHS RCS CSC - retracted and extended positions X and Y | ZF Motorsport

Geometry & contours

Measurement system & mounting pattern

The geometry of the individual SACHS RCS CSC is defined by mounting pattern, centring, release diameter, and working range. The designations A, B, C, D, E, F, K, X, and Y apply to the CSC geometry drawing, the CSC contour drawings, and the CSC variant overview.

A: Bolt circle of mounting holes

B / C / D: Mounting-hole angles

E: Release diameter

F: Mounting-hole diameter

K: Centring diameter

X: CSC in retracted position

Y: CSC in extended position

Note on CSC kits: In CSC kits, A, B, C, D, E, F, K, and stroke are taken from the respective base CSC. Position X corresponds to kit dimension A from the CSC kit drawing. Position Y is calculated from X plus stroke.

SACHS RCS CSC - geometry and dimension designations A B C D E F K X Y | ZF Motorsport

Contour for

883182 000033

883182 000035

883182 000037

883182 000047

883182 000049

883182 000051

883182 000072

SACHS RCS CSC - contour variant 1 for part numbers 883182 000033 to 000072 | ZF Motorsport

Contour variant 1: Mounting pattern with A = 74 mm, B = 33.5°, C = 10°, D = 97°, F = 6.6 mm and K = 58.99 mm. The respective release diameter E and dimensions X/Y are determined by the matching part number in the variant overview.

Contour for

883182 000034

883182 000036

883182 000038

883182 000048

883182 000050

883182 000052

883182 000062

SACHS RCS CSC - contour variant 2 for part numbers 883182 000034 to 000062 | ZF Motorsport

Contour variant 2: Mounting pattern with A = 76 mm, B = 70°, C = 5°, D = 80°, F = 7.2 mm and K = 62.65 mm. For part number 883182 000062, K = 62.5 mm. The respective release diameter E and dimensions X/Y are determined by the matching part number in the variant overview.

CSC variant overview

The following overview shows the available SACHS racing CSCs and CSC kits by part number, version, mounting geometry, release diameter, centring, and stroke. On small displays, the table can be scrolled horizontally.

Part number	Version	Base CSC	A (mm)	B (°)	C (°)	D (°)	E (mm)	F (mm)	K (mm)	X (mm)	Y (mm)	Stroke
88 3182 000 033	Single CSC	-	74	33.5	10	97	38	6.6	58.99	46.5	61.5	15 mm
88 3000 001 125	CSC kit	88 3182 000 033	74	33.5	10	97	38	6.6	58.99	64.7	79.7	15 mm
88 3000 001 135	CSC kit	88 3182 000 033	74	33.5	10	97	38	6.6	58.99	69.7	84.7	15 mm
88 3000 001 136	CSC kit	88 3182 000 033	74	33.5	10	97	38	6.6	58.99	78.6	93.6	15 mm
88 3182 000 034	Single CSC	-	76	70	5	80	38	7.2	62.65	46.5	61.5	15 mm
88 3182 000 035	Single CSC	-	74	33.5	10	97	44	6.6	58.99	46.5	61.5	15 mm
88 3182 000 036	Single CSC	-	76	70	5	80	44	7.2	62.65	46.5	61.5	15 mm
88 3182 000 037	Single CSC	-	74	33.5	10	97	49	6.6	58.99	47	62	15 mm
88 3000 001 134	CSC kit	88 3182 000 037	74	33.5	10	97	49	6.6	58.99	68.6	83.6	15 mm
88 3182 000 038	Single CSC	-	76	70	5	80	49	7.2	62.65	47	62	15 mm
88 3182 000 072	Single CSC	-	74	33.5	10	97	38	6.6	58.99	50	62	15 mm
88 3182 000 047	Single CSC	-	74	33.5	10	97	38	6.6	58.99	43.3	55.3	12 mm
88 3000 001 137	CSC kit	88 3182 000 047	74	33.5	10	97	38	6.6	58.99	64.0	76.0	12 mm
88 3182 000 048	Single CSC	-	76	70	5	80	38	7.2	62.65	43.3	55.3	12 mm
88 3182 000 049	Single CSC	-	74	33.5	10	97	44	6.6	58.99	43.3	55.3	12 mm
88 3182 000 050	Single CSC	-	76	70	5	80	44	7.2	62.65	43.3	55.8	12 mm
88 3182 000 051	Single CSC	-	74	33.5	10	97	49	6.6	58.99	43.8	55.8	12 mm
88 3182 000 052	Single CSC	-	76	70	5	80	49	7.2	62.65	43.8	55.8	12 mm
88 3000 001 138	CSC kit	88 3182 000 052	76	70	5	80	49	7.2	62.65	62.9	74.9	12 mm
88 3182 000 062	Single CSC	-	76	70	5	80	49	7.2	62.5	43.8	55.8	12 mm

Note on CSC kits: CSC kits are pre-assembled units consisting of a concentric slave cylinder, adapter, and mounting screws. They are used when the axial position of the release bearing to the clutch has to be adjusted via an adapter.

Installation notes

Installation & specification

Installed height: Before installation, the retracted and extended positions of the CSC must be checked with clutch, flywheel, and gearbox. Dimensions X and Y must match the required release travel and the available installation space. In CSC kits, X and Y show the axial position of the release bearing as altered by the adapter.

Release diameter: The release diameter must suit the respective SACHS RCS racing clutch. CSC concentric slave cylinders and CSC kits are available with 38 mm and 49 mm release diameters; the individual CSC is also available in a 44 mm version. For all variants, the maximum permitted outside diameter of the gearbox input shaft of 32.5 mm must be observed.

CSC kit: If a defined axial height adjustment is required, a pre-assembled CSC kit with adapter can be used. Adapter height, release diameter, stroke, and line routing must be taken into account.

Hydraulics: Mounting geometry, line routing, pedal travel, and hydraulic volume must be matched to the vehicle and clutch. Professional bleeding is a prerequisite for consistent function and reproducible pedal feel.

Inspection: Regularly check the bearing, sealing system, mounting faces, adapter, fastening screws, and guide. In the event of leaks, wear, stiff actuation, or implausible pedal travel, the racing CSC must be assessed together with the clutch and hydraulic system.