Spherical Roller Bearing 23218K C3

Price on Request
In Stock
SKU
BBS-23218K

SNU 500 – Split Type Housing

Features
• Produced from high grade GG 20 cast iron
• Conform to ISO standards
• Available with:
- Taper bore ball bearings (single and double)
- Spherical roller bearings
• Robust design giving high strength and rigidity
• High load carrying capacity
• Nitrile rubber (NBR) seals:
- V Ring Seal
- Double Lip Seal
• Simple installation
• Sealed end covers available
• Supplied with grease nipple

SNU 500 – Split Type Housing

Applications
CHALLENGE Plummer blocks can be used in a wide variety of applications including:-
• belt drives
• fans of all varieties
• fluid machinery
• hammer and impact mills
• material handling
• metal working
• mining and construction
• mining ventilator
• paper and pulp machinery
• power supply generators
• power transmission applications

Materials
Housing
Produced from GG20 high grade cast iron

Seals
Nitrile (NBR) seals:
- V Ring Seal
- Double Lip Seal

Locating ring
Aluminium

End cover
NBR seal with a mild steel plate

Bearings
All CHALLENGE Plummer Blocks will accept taper bored self aligning ball bearings and spherical roller bearings.

Seals
CHALLENGE Plummer Blocks use V Ring or Double Lip Seals made from acrylonitrile Butadiene Rubber, commonly called NBR or Nitrile.
The complete seal is made up of two equal halves and can be easily inserted into the annular groove of the housing.
The seal has two lips making close contact with the shaft surface.
During lubrication, grease should be added into the void between the two lips.
Care must be taken not to damage the seal lips when installing or seal leakage will occur.

Lubrication
CHALLENGE Plummer Blocks are preferably grease lubricated. CHALLENGE recommend a lithium based grease.
In larger housings, it is possible to oil lubricate. Consult CHALLENGE for further information.
Prior to installation, lubrication should be added and checked during routine maintenance.
After installation, lubrication should fill approximately 33% of the inner body of the housing base.
After six months of running, it is advisable to purge the old lubricant and refill with new.
If the application is a combination of high temperature with high speed and heavy loads then the lubricant should be changed more frequently.
When choosing a suitable grease, a normal temperature range would be -30°C to +120°C.

End Covers
The Plummer Block end covers are made from Nitrile (NBR) rubber with a mild steel plate.

Standard Bearings
Metric sizes
1600, 6000, 6200, 6300, 6800 and 6900 series
Imperial (inch) sizes
Popular R series are held in stock
Tapered roller
Available in both metric and imperial (inch) sizes
• Gcr15 high carbon chromium bearing steel is the standard material for bearing rings and balls
• Stainless steel shields are available
• Seals are Buna Nitrile and fluorocarbon, silicon and Teflon seals are available for special applications
• Retainers for corrosive environment, misalignment or high speed applications are available in stainless steel, nylon or phenolic resins

Bearing Units
• Triple lipped seals with shields as standard
• Sealed units for longer life
• Supplied with a grease nipple
• Pillow blocks (UCP)
• 2 bolt flange units (UCFL)
• 4 bolt flange units (UCF)
• Take-Up units (UCT)
• Bearing inserts also available (UC)
• Self aligning
• Fully interchangeable with other makes

Plummer Blocks
• Produced from high grade GG 20 cast iron
• Conform to ISO standards
• Robust design giving high strength and rigidity
• Available with:
- Taper bore bearing
- Spherical roller bearing
• High load carrying capacity
• Nitrile rubber (NBR) seals:
- V Ring Seal
- Double Lip Seal
• Sealed end covers available
• Supplied with grease nipple


Unit of Sale; Per Unit

More Information
Pl. Block - SeriesSNU
Pl. Block - Housing SizeSNU 518
Pl. Block - Shaft Diameter80
Pl. Block - Mounting Hole Centres290
Pl. Block - Mounting Slot Width22
Pl. Block - Mounting Slot Length28
Pl. Block - Mounting Bolt SizeM 20
Pl. Block - Housing Cover Bolt SizeM 16
Pl. Block - Weight - kg12.3
Stock Code007-175
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