For customers looking for bearings designed to be easily replaced in situ with little disturbance to the shaft alignment or driveline, SKF Cooper split spherical roller bearings offer a solution
– reducing mean time to repair (MTTR) by 70%.
Allows safer and time-saving in situ bearing replacements in
the trapped position on conveyor pulleys, stacker reclaimers
and other machinery
• Sealed variant available for increased protection against
contamination and reduced maintenance
• Longer service life (MTBF) compared to other split bearings,
thanks to the wire cut inner and outer ring manufacturing
technique and sealed versions
• Sealed variant reduces grease consumption – and cuts environmental impact
• Compatible with SKF metric and inch split block housings e.g.
SNLD, SMS and SAF / SDAF
• Reduced risk of shaft fretting with better axial clamping
• Interchangeable with competitors’ split spherical roller
bearings and split block housings
Taking on your biggest challengeTough enough for
heavy-duty industries
• Mining
• Mineral processing
• Cement
And a wide range
of applications
• Conveyor pulleys
• Rope sheaves
• Bucket elevators
• Stackers/reclaimers
• Hoists and winches
• Horizontal grinding mill pinions
• Mixers and agitators
• Jack shafts
• Fans
Boost worker safety:
43% of accidents in the mining and cement industry occur while workers perform maintenance or checks on conveyors. With the SKF Cooper split spherical roller bearings there is no need to dismount the drive coupling or the cantilevered drive to replace the bearing thus avoiding realignment. This greatly reduces the safety risk to workers.
SKF Cooper split spherical roller bearings are manufactured to ISO Normal precision and running accuracy. The mounted internal radial clearance of the split bearing is slightly more or less than the mounted clearance of a standard (CN) spherical roller bearing mounted on an
adapter sleeve. Other bearing internal clearances (e.g. C3) are available upon request.
The SKF Cooper split spherical roller bearing can be used with SKF metric and inch split block housings. The split bearing outer shroud is the same dimension as a standard ISO spherical bearing outer ring.
Minimum load
The requisite minimum load to be applied to spherical roller bearings can be estimated using Pm = 0,01 C0
where:
• Pm = Equivalent minimum load, kN
• C0 = basic static load rating, kN
Shaft and housing itting
• Shaft ISO h9 (IT5/2 and surface roughness, Ra = 0,8)
• Housing ISO G7 (IT6/2)
Grease lubrication (grease ordered separately)
Fill the bearing with one of the following recommended SKF greases at assembly: Ambient conditions
• Normal LGEP 2
• High temperatures (to +120 °C (+248 °F)) LGHB 2
• Cold temperatures (to –30 °C (–22 °F)) LGWM 2
Alternative Lithium/Lithium Complex NLGI 2 greases with suitable base oil viscosity can be used. The bearing should be relubricated
with grease through its W33 groove according to the following formula: Gp = 0,0015 x D x B for sealed bearings
where:
• Gp = grease quantity, grams
• D = bearing outside diameter, mm
• B = bearing outer ring width, mm
The frequency of the relubrication should be according to the General
Catalogue and based on the bearing size, shaft speed, operating temperature, etc. SKF SYSTEM24 lubricators with SKF LGWA 2 grease can be used to relubricate the bearings.
Oil lubrication Use ISO VG 220 oil or ISO VG 320 oil
as required.
Temperature limits Bearing components are heat stable
up to 120 °C at continuous operation.
The seals have a limit of –40 to +90 °C(–40 °F to +194 °F). Check that the bearing is adequately lubricated for normal operating conditions.
Bearing rating life SKF Cooper uses ISO 281:2007 to calculate the L10m modiied rating life of the split spherical roller bearing. The sealed split bearing will have minimum two times longer rating life than the open (unsealed) bearings because of the improved exclusion of contamination.
