LS 5578 thrust washer SKF 55x78x5 mm - 1 pc.

Thrust washer SKF LS 5578

LS 5578 SKF is a universal thrust washer with nominal dimensions 55 × 78 × 5 mm.

Material and finish

The washer is made of hardened carbon-chromium bearing steel. The raceway is ground and the other surfaces are turned.

The chamfers are on one side of the washer, at the bore and outside-diameter edges. The raceway is on the opposite side to the chamfers.

Sales unit

One sales unit includes 1 washer LS 5578 SKF.

Nominal washer dimensions

d — nominal bore diameter: 55 mm

D — nominal outside diameter: 78 mm

B — nominal thickness: 5 mm

r₁ — minimum chamfer dimension: 0,6 mm

α — chamfer angle: 45°

Tolerances

Bore d: E12 VE; from +0,060 to +0,360 mm. Dimension range: 55,060–55,360 mm.

Outside diameter D: a12 VE; from −0,660 to −0,360 mm. Dimension range: 77,340–77,640 mm.

Thickness B: h11 VE; from −0,075 to 0,000 mm. Dimension range: 4,925–5,000 mm.

The designation VE denotes the envelope requirement according to ISO 14405-1. Maximum axial runout sᵢ is 0,010 mm in class Normal according to ISO 199.

The diagram is illustrative. The photo illustrates the LS family. The box illustration does not specify the original manufacturer packaging.

Questions and answers

What are the nominal dimensions of LS 5578 SKF?

Bore d is 55 mm, outside diameter D is 78 mm and thickness B is 5 mm. The minimum chamfer dimension r₁ is 0,6 mm and the chamfer angle is 45°.

What dimensional tolerances does SKF specify?

The bore has tolerance E12 VE, the outside diameter a12 VE and the thickness h11 VE. The dimension ranges are respectively 55,060–55,360, 77,340–77,640, 4,925–5,000 mm.

What is the washer made of and how are its surfaces finished?

The washer is made of hardened carbon-chromium bearing steel. The raceway is ground and the other surfaces are turned.

What does one sales unit include?

One sales unit includes 1 washer LS 5578 SKF.