Milnor K36 0005R, K28 0010 manual MSSM0303AE/8451BV, Front Bearing Assembly Rear Bearing Assembly

MSSM0303AE/8451BV

MAIN BEARING AND SEAL REPLACEMENT

FOR DIVIDED CYLINDER MACHINES

This section applies to the front and rear cylinder shaft bearings of all divided cylinder machines (Rapid Load, Staph-guard® , dye machines, etc.). It does not apply to jackshaft bearings, idler shaft bearings or bearings on open pocket machines.

The bearings covered by this section are double row, spherical roller, self aligning bearings; Koya, SKF, FMC, Torrington or equal. Referring to FIGURE 1, the rear (clean side on Staph-guard®models) bearing is firmly held in the bearing housing (bearing and seal carrier) by the shaft seal holder, preventing axial movement. The front (soil side on Staph-guard®models) bearing is free to move axially in the bearing housing to accommodate thermal expansion of the shaft during operation and is thus the “floating” bearing. Both bearings are held in place on the tapered portion of the shaft by a bearing lockwasher and locknut.

The front and rear bearings are each protected from contamination from wash water by three spring loaded, lip type seals and a shaft seal leak-off cavity (that carries off any water that leaks past the main water seals) as shown in FIGURE 1.

Cap	Front Bearing Assembly		Rear Bearing Assembly
Bolt	Shell		Shell	Cap Bolt
Bearing
	Front		Rear
Housing				Bearing
(Bearing and				Housing
Seal Carrier)				(Bearing and
				Seal Carrier)
Bearing Cover		Seal Sleeves		Seal
Bearing
Lock-nut
Bearing				Shaft Seal
Lock-washer		Shaft		Holder
Front Bearing		Seals
(floating)				Rear Bearing
	Bearing and Seal	Shaft Seal		(fixed)
			Bearing and Seal
	Cavity Leak-offs	Leak-off
			Cavity Leak-offs
		Cavities

Figure 1 (MSSM0303AE)

Cross Section View of Front and Rear Bearing Assemblies

(Bearing Assembly for 60" and 72" WED Shown. Others similar.)

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