COOPER Water-cooled Housings

Product Description

The NEWORLD assortment of SNL plummer block housings is characterized by a number of advantages, including

• high load carrying capacity and machining quality

• improve the performance and increase the service life of your application

• can be fitted with a choice of seals

• robust design, accurately machined surfaces and simplified installation

Bearing types

• Self-aligning ball bearings

• Spherical roller bearings

• CARB toroidal roller bearings

Bearing dimension series

• 02, 03, 22, 23, 32

Shaft diameter range

• 20 to 160 mm

• 3/4 to 5 1/2 in.

Typical shaft-bearing combinations

• Plain shaft with bearing on an adapter sleeve

• Stepped shaft with bearing on a cylindrical seat

Seals

• Four-lip

• V-ring

• Labyrinth

• Heavy-duty

• Felt

Lubrication

• Grease

• Oil 

Materials

• Grey cast iron

• Spheroidal graphite cast iron

Mounting

• Two-bolt mounting

• Four-bolt mounting

Compliance to standards

• ISO 113:2010 

(two-bolt plummer block housings)

Supersedes

• SN, SNA, SNH series

Bearings on adapter sleeves

Split plummer block housings are typically used with self-aligning ball bearings, spherical roller bearings or CARB toroidal roller bearings fitted on straight or stepped shafts; the bearings can be mounted on adapter or withdrawal sleeves or directly on cylindrical shaft seats. These housings can also be used with other bearing types if they are within the correct Dimension Series.

1.Bearings on adapter sleeves on straight shafts

Advantages

• Drawn round bar(tolerance h9)can be used without machining.

• Maximum shaft strength as there is no weakening by shoulders or reliefs.

• Bearings can be mounted at any position on the shaft.

• Mounting force, i.e. the force required to drive the bearing onto the sleeve, is 40 % less than with other shafts because there is only one sliding surface.

• Bearing radial clearance can be adjusted (within limits) during mounting to meet application demands.

Applications

• Bearing arrangements for relatively long shafts where more than two bearings are required for support.

• Bearing arrangements where machine components are mounted using wedging or tensioning components that do not require the shaft to be machined.

• Bearing arrangements wherethefinal position of the bearing cannot be accurately determined.

2. Bearings on adapter sleeves on stepped shafts

Advantages

• The bearing position on the shaft is accurately determined by the abutment ring.

• Other components on the shaft can be axial ly located by the bearing on its sleeve via spacer sleeves.

• Easy dismounting as the bearing inner ring is in contact with the abutment ring.

• Bearing radial clearance can be adjusted (within limits) during mounting to meet application demands.

Applications

• Bearing arrangements at the end of a shaft.

• Bearing arrangements where frequent mounting and dismounting are required. 

Bearings on withdrawal sleeves

3. Bearings on withdrawal sleeves on stepped shafts

Advantages

• The bearing position on the shaft is accurately determined by the shaft shoulder.

• Other components on the shaft can be axially located by the bearing on its sleeve via spacer sleeves.

• Easy dismounting using a withdrawal or hydraulic nut.

• Bearing radial clearance can be adjusted (within limits) during mounting to meet application demands.

Applications

• Bearing arrangements at the end of a shaft.

• Bearing arrangements where frequent mounting and dismounting are required. 

4.Bearings on cylindrical seats on stepped shafts

Advantages

• The axial load carrying capacity of the bearings (in both directions) is not limited by a sleeve.

• The residual bearing internal clearance is determined by the tolerance of the shaft seat so there is no danger of radially preloading the bearing during mounting.

• The bearing position on the shaft is accurately determined by the shaft shoulder.

• The bearing can be supported by other components via spacer sleeves.

• The shaft diameter at the bearing position is maximized. 

Applications

• Bearing arrangements where large numbers of bearings have to be mounted.

• Bearing arrangements where large shock loads can occur. 

Standard seals

An important advantage of SNL plummer block housings is that they can be fitted with different types of seals. Standard NEWORLD seals include split four-lip seals, V-ring seals, felt seals, labyrinth seals and heavy-duty “taconite” seals with a radial labyrinth. The seals are easy to install and are supplied separately.

All the standard seals, as well as the seals for use with oil lubrication, are shown in table 1, with an overview of the seal type, its design features and suitability for various operating conditions. 

Application

Applications

• Mine ventilators

• Exhaust and fresh air fans

• Flue gas fans

• Emergency power supply generator flywheels

• Transmissions

• Belt drives

• Impact and hammer mills