Reduced BeaRing usage

NSKHPS

www.bsc.com.au

RedefiNiNg tHe StaNdaRdLoweR

Maintenance costs

OUTER FRONT COVER

210mm

Continually developing products with greater strength and higher accuracy, NSK’s new NSKHPS fully incorporate the advantages of NSK’s world class design, materials, and manufacturing technology, setting a new standard for bearings.

LONG LIFE

HIGHER LIMITING SPEED

HIGH ACCURACY

UNIVERSAL MATCHING

WIDE RANGE LINEUP

RedefiNiNg tHe StaNdaRdNSKHPS

210mm

Operating Life

Operating Life

Operating Life

Operating Life

Limiting Speed

15%LONGER

Operating Life

Operating Life

Limiting Speed

Limiting Speed

15%HIGHER

90%LONGER

20%HIGHER

60%LONGER

HIGHER20%

2xLONGER

15%LONGER

Ball Screw Support Angular Contact Thrust Ball Bearings

High Precision Angular Contact Ball Bearings

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Spherical Roller Bearings

Cylindrical Roller Bearings

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Angular Contact Ball Bearings

Deep Groove Ball Bearings

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RedefiNiNg tHe StaNdaRd

15%LONGER

629 X 297 6PP A4 ROLL FOLD

209 mm

RedefiNiNg tHe StaNdaRd

In the commitment to produce the most durable, highest

quality bearings possible, NSK has been a leader in the

development of ultra-clean steel for bearing rings and

rolling elements. NSK ultra-clean steel is a highly

pure vacuum-degassed, high-carbon chromium

steel containing a minimum of non-metallic

inclusions. Research proves that ultra-clean steel

combined with the appropriate heat treatment

significantly increases the rolling fatigue life of

bearings. Steel used for bearing components

requires the following characteristics:

Oxygen content is a measure of contaminants in steel. Improved

production methods have greatly reduced oxygen content

in NSK’s steel, resulting in longer bearing life.

NSK ‘Z’ Steel extends Bearing Life

Ultra Clean Steel Increases The Rolling Fatigue Life

•Good Hardenability

•High Purity

•High Rolling Contact Fatigue Strength

•High Wear Resistance

NSK Z Steel Bearings last longer.

INNER BACK COVER

210mm

BALL

Hardenability

Bearings are heat treated to improve the hardness of the steel and give them greater life. In addition, alloys added to the steel/carbon mix ensure that the hardness will be uniform throughout the component. These alloys include chrome, molybdenum, and nickel.

Rolling Contact Fatigue Strength

The fatigue strength of a bearing is greatly affected by the number of non-metallic inclusions in the steel. These inclusions present stress points where micro-cracks can develop. The repeated contact stress of the balls rolling over an inclusion causes additional stress in the steel surrounding the inclusion. The micro-cracks enlarge, weakening the material. Eventually these cracks break out at the surface of the raceway allowing a small piece to crack out. This is known as spalling. The reduced inclusion content of NSK steel reduces the overstressing of the material, thereby increasing its fatigue strength. Heat treating also improves the fatigue strength of the steel.

Wear Resistance

Although there is no way to stop the process totally, heat treating increases steel’s resistance to wear. For bearings, this wear resistance helps to prolong life under adverse conditions. NSK steels have the added benefit of more uniform heat treating. This ensures good hardness and excellent wear resistance. NSK has developed ultra-clean bearing steels to greatly improve the life of NSK products. Bearings now survive much longer than those manufactured with standard degassed steels. NSK researchers are constantly working on improvements that will further extend bearing life in the future. For more information, contact your nearest BSC Branch.

Purity

During the steel-making process, a number of materials can enter and combine with the steel. Contaminants found in steel include silicone, aluminum and sulfur. When combined with oxygen, they form inclusions. Each type of inclusion affects bearing fatigue differently. Oxide inclusions weaken the steel. The total amount of oxide group inclusions in steel can be represented by the amount of oxygen in the steel; the higher the oxygen content, the lower the fatigue life. Vacuum-melt or vacuum-degassing processes control the amount of non-metallic inclusions in bearing steel. Further developments by NSK in conjunction with steel manufacturers have resulted in even lower inclusion levels to improve quality and extend fatigue life. Prior to this, bearings meeting these specifications were manufactured from aircraft-quality steel at a premium cost.

These drawings show the progressive stages of subsurface-type flaking

in relation to non-metallic inclusions. NSK uses ultra-

clean steel with very low inclusion levels to improve

bearing life.

629 X 297 6PP A4 ROLL FOLD

209mm

NEW SOUTH WALES

STATE OFFICE MOOREBANKPh: (02) 8706 2100 moorebank@bsc.com.au ARNDELL PARKPh: (02) 9622 9322 arndellpark@bsc.com.auDUBBOPh: (02) 6884 5545 dubbo@bsc.com.auGRAFTONPh: (02) 6642 2666 calstar@bsc.com.auGRAFTON SOUTHPh: (02) 6642 4588 resco@bsc.com.auLISMOREPh: (02) 6627 3000 lismore@bsc.com.auNEWCASTLEPh: (02) 4903 1000 newcastle@bsc.com.auORANGEPh: (02) 6362 3555 orange@bsc.com.auWAGGA WAGGAPh: (02) 6925 3711 wagga@bsc.com.auWOLLONGONGPh: (02) 4231 8500 wollongong@bsc.com.au

VICTORIA

STATE OFFICE CLAYTONPh: (03) 9560 3222 clayton@bsc.com.au BALLARATPh: (03) 5337 6001 ballarat@bsc.com.auCAMPBELLFIELDPh: (03) 9357 6166 campbellfield@bsc.com.auDANDENONGPh: (03) 9794 5624 dandenong@bsc.com.auGEELONGPh: (03) 5272 2951 geelong@bsc.com.auSHEPPARTONPh: (03) 5821 4911 shepparton@bsc.com.au

SUNSHINEPh: (03) 9311 4138 sunshine@bsc.com.auSWAN HILLPh: (03) 5032 9444 swanhill@bsc.com.auWODONGAPh: (02) 6024 3722 wondonga@bsc.com.au

QUEENSLAND

STATE OFFICE NORTHGATEPh: (07) 3866 8333 northgate@bsc.com.au ARCHERFIELDPh: (07) 3277 4488 archerfield@bsc.com.auBUNDABERGPh: (07) 4153 3220 bundaberg@bsc.com.auCABOOLTUREPh: (07) 5495 6266 caboolture@bsc.com.auCAIRNSPh: (07) 4225 3100 carins@bsc.com.auMACKAYPh: (07) 4952 1399 mackay@bsc.com.auROCKHAMPTONPh: (07) 4927 2033 rockhampton@bsc.com.auSOUTHPORTPh: (07) 5532 4888 southport@bsc.com.auTINGALPAPh: (07) 3390 7099 tingalpa@bsc.com.auTOOWOOMBAPh: (07) 4634 4133 toowoomba@bsc.com.auTOWNSVILLEPh: (07) 4779 0500 townsville@bsc.com.auWACOLPh: (07) 3271 3444 wacol@bsc.com.auYATALA NORTHPh: (07) 3807 4971 yatala@bsc.com.au

WESTERN AUSTRALIA

STATE OFFICE WELSHPOOLPh: (08) 9251 4444 welshpool@bsc.com.au O’CONNORPh: (08) 9337 3000 oconnor@bsc.com.auOSBORNE PARKPh: (08) 9445 1811 osbornepark@bsc.com.au

SOUTH AUSTRALIA

STATE OFFICE WINGFIELDPh: (08) 8344 0800 wingfield@bsc.com.au

LONSDALEPh: (08) 8326 5459 lonsdale@bsc.com.au

BAIRNSDALEPh: (03) 5153 1555 bairnsdale@bjbearings.com.auCAMPBELLFIELDPh: (03) 9357 6166 campbellfield@bjbearings.com.auFERNTREE GULLYPh: (03) 9753 6200 ferntreegully@bjbearings.com.auLEONGATHAPh: (03) 5662 4300 leongatha@bjbearings.com.auPAKENHAMPh: (03) 5940 1111 pakenham@bjbearings.com.auSALEPh: (03) 5144 5111 sale@bjbearings.com.auTRARALGONPh: (03) 5175 0500 traralgon@bjbearings.com.auWARRAGULPh: (03) 5623 5444 warragul@bjbearings.com.auWONTHAGGIPh: (03) 5672 1200 wonthaggi@bjbearings.com.au

BELL BAYPh: (03) 6382 4053 bellbay@websterbsc.comBURNIEPh: (03) 6430 2811 burnie@websterbsc.comDERWENT PARKPh: (03) 6271 3222 derwentpark@websterbsc.comDEVONPORTPh: (03) 6421 1200 devonport@websterbsc.comLAUNCESTONPh: (03) 6324 6555 launceston@websterbsc.comROCHERLEAPh: (03) 6336 0634 rocherlea@websterlifting.com

B100

-005

4/14

Available through BSC Group BusinessesBSC Branches

explore our comprehensive product range online

www.bsc.com.au

OUTER FRONT COVEROUTER BACK COVER

210mm