introduction to snfa high precision bearings

Introduction to SNFA High Precision Bearings

Presented to SKF Hungary

Presented by Hugo Carlén

Sales Developer, SKF SNFA High Precision Bearings

2007-08-22

2007-07-16 Hugo Carlén Slide 2 / 04:01

Agenda

•SNFA Background 09:30

•Product range

•Designations - exercise

•Movie from SNFA factory Turin

•Order handling

•When to choose SNFA

•Future integration projects

•Lunch 12:30

•Price calculation and comparisons 13:15

•Technical questions – Secba 13:45

•Specific customers - activities


SNFA background1


SNFA Background

•Established in France 1952 as “Société Nouvelle de Fabrication Aéronautique”

•Acquired by SKF 2006

•High Precision Bearings – UK >65mm Italy <65mm

•Aerospace bearing manufacturing – France

•Sales offices in UK, France, Germany, Italy and Switzerland


Locations

UKCharfield, HPB 90 employeesFranceValenciennes, Aerospace, 450 employees

ItalyTurin, HPB, 200 employees

GermanyGerlingen, Sales office

SwitzerlandFribourg, Sales office

[SKF HPB Villar Perosa 275 employees]


SNFA HPB compared with SKF HPB Villar Perosa

0

5

10

15

20

25

30

35

Charfield Turin Villar Perosa

Sales value, HPB, MEUR


SNFA Machine Tools Sales


SNFA Sales per sector

OEM

AFTERMARKET

30%

70%

SKF Villar Perosa sales per channel


Stengthness of SNFA

•Very strong brand in Europe

•High market share in Italy, Germany, Switzerland

•Long tradition of High Precision and Aerospace products

•Close contact with customers

•Product range complements SKF's

•Customized preload

•SECBA Calculation Program

•One of the leading suppliers to the machine tool business


Weakness of SNFA

•International sales dependent on agents and independent distributors

•Family run business with limited resources

•High Precision Angular Contact Ball Bearings only


Acquisition by SKF

•SKF Acquired SNFA 4th of July 2006

•Sales in Italy, Germany, UK, France and Switzerland will remain unchanged

•Sales in other countries will gradually be transferred to local SKF companies

•First focus is to maintain current sales

•Next step is to increase sales using SKF Sales Units worldwide


SNFA and SKF HPB in Hungary

Sales of HPB in Hungary

0

50

100

150

200

250

300

350

400

2005 2006 2007-June

kEU

R SNFA

SKF HPB


2SNFA Product range


Contact

angle

α

High Precision Angular contact ball bearings

Point contacts


Applications for High Precision ACBB


Product range – Angular Contact Ball Bearings

(718xx) 719xxACD/ACE 70xx ACD/ACE 72xx, BSA 2


Product designations

p. 63

p. 5


Designation examples

EX12 7 CE1 DDM

12mm CE=Phenolic Resin cage

Preload

L=LightM=MediumF=High

7001 CD/P4ADBB


Designation - exercise

Designation ISO-series

Bore [mm]

Specials

Precision

Contact angle

Set type Preload Price “IP”

VEX 70 9 CE1 DDM

SEA 50 7 CE3 DUL

EX140 /NS 7 CE1

SEB280 7 CE3 TDL

VEX100 /G1 /NS 7 CE3 UL


Preload gap "g"

Mounting of preloaded set

“Back to back” - DD


Preloading of set of bearings

This gap give the set of two bearings preload

Measured in decaNewton (1kg)


Example of bearing sets

DD [Dos-à-dos] DB [Back-to-back]

FF [Face-à-face] DF [Face-to-face]

T [Tandem] DT


Universally matchable bearings

+ Universal bearings can make up many combinations

+ Easy stock keeping

-Not as accurate as dedicated sets

-Not possible to get special preload

U/DU G/DG

Same width

X 2


Importance of Contact Angles – 4UL is not 4xUL

• SNFA match bearings within a set to be within 1deg. This is of particular importance when the set contains bearings in tandem. The contact angle is the main driver in achieving good load sharing.

• For example VEX25/NS 7CE1 TDTL – simulation in SecbaBearin

gContact angle

Load [N]

Protrusion, δ [µm]

1 13° 28 4.44

2 18° 62 4.44

3 18° 62 4.44

4 13° 28 4.44


SNFA Preloading

Standard preloads:

Light Medium HeavyL M F [FR=Fort]

A B C

Special preload150 DAN [=1500N]

150G [=1500N]


Special features

Lubrication via outer ringBearings with grooves comes with O-rings

H1 G1 GH

L

FAG DLR


Bearing Marking

Bore and Outside size deviation marks are placed at the high point of eccentricity.

The “V” mark shows direction of thrust on the inner race.

Year mark with character

S=2006, T=2007 etc.


SNFA to SKF Designation

From the SNFA original designations the following changes are made enabling to create designations with less then 24 characters:

•/B is added to show SNFA-High Precision Bearings

•Spaces are removed

•, (comma) is changed to . (point)

•. (point) is removed except where required to identify fraction of "dimension" eg 2.5

•Comments are removed

•Suffix DAN and daN (deca Newton) are replaced by G (where G is preload in daN), i.e. 150daN is 150G

•Suffix uM and MICRON are replaced by C (where C is clearance in uM), i.e. +50um is 50C

•Suffix for grease: the SKF designation (Gxx or VTxxx) for grease is applied

•TOPAS and SPECIAL are considered comments and thus removed


SNFA to SKF Designation

SKF Designation SNFA DescriptionB/EX15/NS7CE1DD0.5G EX15/NS 7CE1 DD 0,5 daN

B/EX127CE1FFM EX12 7CE1 FFM

VEX60/NS 7CE1 TD 3DAN – NCA15

VEX60/NS7CE1TD3DAN-NCA15

VEX60/NS7CE1TD3G-NCA15

VEX60/NS7CE1TD3GNCA15

B/VEX60/NS7CE1TD3GNCA15


3SNFA order handling


Scenario 1 - DPC X in COH

Navisio

n

Sales Unit COH

Prodmast

E-mail purchase order *

E-mail order ackn. **

E-mail shipping notification

Enter customer order in COH using DPC X procedure

Pre-requisites:* Create SNFA as Supplier in COH - all data avaliable on the SNFA Spider site

Invoice sent to Sales Unit mail / e-mail**

Goods shipment to Customer

Invoice Customer

1. SNFA enters the order in Navision

2. Delivery Time Fixing / Ackn. of the order

Shipping notification

***Outside EU: Invoice needs to follow with the goods for export/import.

Product file

Customer order

Order ackn. (e-mail, fax)

Pick / Pack / ship the goods

Customer

** Create account for SKF Sales Unit at SNFA. Fill out and supply form from SNFA


DPC X in COH - step by step

1. SKF = COH, SNFA = Navision, Customer

2. There is no system connection between SKF and SNFA for time being.

3. Prodmast updates product data to COH

4. Customer sends an order to Sales Unit, SU

5. SU enters the order in COH using the DPC X procedure

6. A purchase order is created and sent to SNFA via e-mail

7. SNFA receives the order and enters it into Navision

8. Delivery Time Fixing and order acknowledgment are done in Navision

9. Order acknowledgement is sent to the SU via e-mail

10.SU sends an order acknowledgment to the Customer

11.When the goods is to be shipped, SNFA e-mails a shipping notification to SU, containing shipment date, quantity, nr of packages, etc.

12.SU sends a shipping notification to the Customer

13.Goods is shipped to the customer from SNFA to the customer via the Domestic Hub

14.SNFA sends an invoice to the SU. Outside EU invoice has to follow the goods for the export/import.

15.SU invoices the Customer using DPC X


4When to sell SNFA bearings?


When to sell SNFA bearings (instead of SKF)

• Priority 1 is to keep existing SKF and SNFA business

• We shall not replace SKF by SNFA

• Replace only when SKF products do not meet customer requirements

• What brand or product to promote for new business depends on the application and the product features e.g. SNFA VEX for high speed applications


5Future integration projects


New High Precision Bearing range

•A new range of SKF SNFA High Precision Bearings will be launched

•The new bearings will be the best of SKF and SNFA types

•First product to be launched is Ball Screw Support Bearings

•Bearing boxes will be dual branded


COH connection

•SNFA computer systems will be connected to COH, allowing

• Online stock

• Online ordering

• Less paperwork


Integration timeline

Acquisition

Introduction - Asia

Introduction Eastern Europe

Introduction Western Europe

Common BSSB

Navision/COH connection

Common 718-series


Pricing - exercise

Designation Price “IP”

VEX 70 9 CE1 DDM

SEA 50 7 CE3 DUL

EX140 /NS 7 CE1

SEB280 7 CE3 TDL

VEX100 /G1 /NS 7 CE3 UL

•SNFA is not yet included in IP-module

•PS loaded in Prodmast is incorrect

•Pricelists are issued to SKF Sales Units

•Prices are calculated with a base price + delta price for seals/ceramics/grease/lubrication holes etc


5Learn more about SNFA High Precision Bearings


SNFA Spider site

spider.skf.net/skf/spider/snfahpb.nsf/html/homepage.html


SNFA Catalogues


SNFA Charfield Sales Office

Anna ReevesUK Customer Service

Sarah Elliott SNFA Group Customer Service

Claire WoodlandExport Customer Service

Martine DavisSales & Marketing Manager

Fliss EarleyCustomer Services Teamleader

Andy TaylorUK Sales Engineer

Barbara WoodruffPart time Admin

Triona Nixon (not on picture)Customer Service

Hugo Carlén (not on picture)Sales Developer


Move to Stonehouse

SNFA production in Charfield, UK is moving to Stonehouse in October

- 20 km away

-95% of all employees continues to work

-New, modern factory

-Batch size has been increased to make up for losses


Contacts

Hugo Carlén

Sales Developer

+46 31 337 1582

Martine Davis

Sales & Marketing Manager, SNFA UK+44 1453 846603

Peter Leslie

Engineering Manager, SNFA UK

+44 1453 846612


SECBA

SNFA - SNFA Electronic Consultant for Bearing Applications

•Customer version – static

•Internal version – dynamic

•Currently version 5.1


SECBA or Bearing Beacon?

•Gap between SKF Bearing Beacon and SECBA was analyzes by SKF Engineering Software Support.

•SECBA will be maintained at least 3-5 years

•A new version based on Bearing Beacon framework will be developed - long term plan

•SECBA can only handle ball bearings

•SECBA output in reports, similar to SKF BB


SECBA Training

For training in SECBA, please contact Peter Leslie, Engineering Manager, SNFA UK

introduction to snfa high precision bearings

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