Ball BushingsHepcoMotion®
www.HepcoMotion.com
Contents
HepcoMotion Super Ball Bushings 1
HepcoMotion Standard Ball Bushings 1 SBE Closed Super Ball Bushing 2 SBEO Open Super Ball Bushing 3 CS Closed Pillow Block Super Ball Bushing 4 CSO Open Pillow Block Super Ball Busing 5 LME Closed Standard Ball Bushing 6 LME-OP Open Standard Ball Bushing 8 LME-L Extended Length Standard Ball Bushing 10 LMF-L Round Flange Long Version 12 LMK-L Square Flange Long Version 14
HepcoMotion Precision Linear Shaft 17
Metric Shaft Support Rails 18
Aluminium Shaft Supports 19
Housing and Shaft tolerance 20
Assembly 21
Load / Life 22
Lubrication 23
Part Number 24
Super Ball Bushing - European Standard
CSO BlockHigh load with self-aligning feature.
High load with self-aligning feature.
High load with self-aligning feature.
High load with self-aligning feature.
SBE Bearing
Super European closed Super European pillow block open
SBEO Bearing
Super European open
CS Block
Super European pillow block closed
Standard Ball Bushing
Flanged Housing
Standard LMESteel construction for rigid mounting.
Open typeLME□OP
Steel construction compatible with Hepco support rail.
For higher ridgity. For higher ridgity
LMF□L Round Double Flange
Super Japanese
LMK□L Square Double Flange
Super Japanese
Extended Lenght LME□L
Standard European Standard European Standard European
Steel construction for additional ridgity.
1
HepcoMotion Super Ball Bushings
Super ball bushings from HepcoMotion offer you 3 x load capacity which equates to 27 x the life of standard ball bushings with the same overall dimensions.
These high quality units consist of hardened steel segmented load bearing plates with precision ground ball tracks combined with a 0.5 deg self alignment feature.
This ensures a uniform load distribution over the entire row of balls preventing point loading that shortens life.
Self alignment featureThe outer surface of the steel load bearing plates is designed with a curved surface that in turn allows the bushing to absorb misalignment caused by inaccuracies between the shaft and ball bushing.
In addition to ensuring equal load distribution, the feature provides smooth entry and exit of the balls in and out of the loading area.
The self alignment feature requires two super ball bushings to be mounted to one shaft in a conventional two parallel shaft arrangement.
• Super ball bushings are interchangeable with the ISO standard meaning all main dimensions, outside diameter, bore and length are the same.
• Super ball bushings will reduce preparation and assembly time as any shaft defl ection and inaccuracies in the machining process will be accommodated by the self alignment feature.
• Easy entry and exit feature that comes with the self aligning design ensures smooth movement.
• Ball retainers are made from a high grade polyamide maintaining low friction over the entire travel length.
• Friction coeffi cient of 0.001 with oil lubrication.• Can operate at temperatures up to 100 deg c and speeds up to
3m/s acc 150m/sec 2
Fig 2. 0.5° of Self-Alignment
WON Super Ball Bushing
Life(27X)
Load capacity(3X)
Conventional Ball Bushing
Table 1. Comparing Life and Load Capacity
Fig 3. Radial Clearance Adjustment
HepcoMotion Standard Ball Bushings
Standard ball bushings from HepcoMotion offer dimensional interchangeability with all major manufacturers and incorporate a rigid steel outer sleeve with 4 / 6 ball circuits depending on size. Ball retainers are made from high grade polyamide for superior performance and low friction.
Loadcarrying row
Non-loadCarring row
Hardened andground outer sleeve
Retainer Ball
LM Shaft
End sealRatainingring
Fig 1. Linear Ball Bushing
2
Closed type
European Super Ball Bushing
SBE type
Part No.
D1DwithoutSeal
withoutOne Seal
withoutTwo Seal B1 B2B d
Dimensions Shaft No.Ballrows
Basic Load Ratingsdyn.
C(N)
stat.Co(N)
Unit : mm
26
60
120
184
342
586
weight(g)
3
SBEO type
Open type
European Super Ball Bushing
Part No.
D1DwithoutSeal
withoutOne Seal
withoutTwo Seal B1 B2B E d
Dimensions ShaftAngle No.Ballrows
Basic Load Ratingsdyn.
C(N)
stat.Co(N)
Unit : mm
20
50
100
154
286
486
weight(g)
4
Closed type(with 1pc of SBE)
European Super Ball Bushing Pillow Block
CS type
Part No.h E W L F G T B C K b S1 S2 d
Dimensions Mounting Dimensions Shaft No.Ballrows
Basic Load Ratings
dyn.C
(N)
stat.Co(N)
Unit : mm
204
340
636
970
1740
2922
weight(g)
5
CSO type
Open type(with 1pc of SBEO)
European Super Ball Bushing Pillow Block
CSO 16UU
CSO 16UU-B
CSO 20UU
CSO 20UU-B
CSO 25UU
CSO 25UU-B
CSO 30UU
CSO 30UU-B
CSO 40UU
CSO 40UU-B
CSO 50UU
CSO 50UU-B
22
25
30
35
45
50
26.5
30
39
43.5
54
66
53
60
78
87
108
132
43
54
67
79
91
113
35
42
51
60
77
88
8
10
13
15
20
25
9
9
11.5
14
19.5
22.5
68
55
57
57
56
54
θ
40
45
60
68
86
108
26
32
40
45
58
50
13
18
22
22
26
34
M6
M8
M10
M10
M12
M16
-M5-
M6-
M8-
M8-
M10-
M12
16
20
25
30
40
50
4
5
5
5
5
5
1332
2371
4557
5644
9398
13857
715
1274
2234
3018
4410
6860
Part No.h E W L F T B C Db S1h1 S2
Dimensions Mounting Dimensions Shaft No.Ballrows
Basic Load Ratings
dyn.C
(N)
stat.Co(N)
Unit : mm
160
280
552
846
1516
2546
weight(g)
6
LME Series - European
LM SeriesStandard type Open type
Working BoreDiameter
Basic Load RatingsDynC
(N)
Stat.Co(N)
dr Tol.Part No. Part No.No. ofBall circuit
No. ofBall circuit
No. ofBall circuit
Unit : mm
7
Part No.
Dimensions (mm)Unit : mm
DTol. Tol. Tol.
L BW
Wgt.(gf)
AllowableDiametralClearanceD1 h1
8
LM Series - Japanese
LM SeriesStandard type Open type
Working BoreDiameter
Basic Load RatingsDynC
(N)
Stat.Co(N)
dr Tol.Part No. Part No.No. ofBall circuit
No. ofBall circuit
No. ofBall circuit
Unit : mm
9
Part No.
Dimensions (mm)Unit : mm
DTol. Tol. Tol.
L BW
Wgt.(gf)
AllowableDiametralClearanceD1 h1
10
Series
LME□L Series
Dimensions (mm)Working BoreDiameter
Basic Load RatingsSeriesD L B Wgt.* Dyn.
CStat.CoTol. Tol. Tol. Tol.Part No.
No. ofBall
circuit
Unit : mm
11
LMF/K□L Series - Japanese
Part No.
Circulartype
Squaretype
No. ofBall
circuit
AllowableDiametralClearance
Basic Load Ratings
Dyn.C (N)
Stat.Co (N)
Working BoreDiameterWgt.*
(gf) dr Tol.
Unit : mm
12
Part No.
Dimensions (mm)
d1 x d2 x hD
Tol. Tol. Tol.L B
H K W A F *Sqiareness
PCD
Unit : mm
13
Shaft Options
Correct Shaft selection is vital if maximum performance is to be achieved from your linear system. Hepco Precision Shaft has been developed to provide excellentperformance when used with either recirculating ball bushings or plane bearing technology.
An extensive range of shaft materials are available and Hepco offers a full machining facility with fast turnaround.
Other types of shaft available include: • Specials up to 150mm Ø • Tubing Please enquire.
Introducing the HepcoMotion® Precision Linear Shaft
Shaft Type Metric REF Hardness RC TOL
Diameter Options5 6 8 10 12 16 20 25 30 40 50 60 80
Metric Carbon Steel CK53 Hardened and Ground NIM-- 60 h6
Metric Stainless Steel (400 series) Hardened and
Ground
NIM--SS 50 h6
Metric Soft Stainless Steel (300 Series) Ground
NIM--SS316 X h6
Metric Hardcoat Anodised Aluminium NIMA-- X h6 – – – – – – –
Shaft Type Imperial REF Hardness RC TOL
Diameter Options3/16 1/4 3/8 1/2 5/8 3/4 1 1 1/4 1 1/2 2
Metric Carbon Steel CK53 Hardened and Ground NIL 60 Class L
Metric Stainless Steel (400 series) Hardened and
Ground
NIL--SS 50 Class L
Metric Soft Stainless Steel (300 Series) Ground
NIL--SS316 X Class L
Metric Hardcoat Anodised Aluminium NILA-- X Class L
14
Metric Shaft Support Rails
Shaft support rails will prevent shaft defl ection under load and provide a high level of rigidity in order to achieve optimum performance from your open type Pacifi c Bearing, or any other open recirculating linear bearing.
Support Rails are of low overall height making them particularly suitable for use with Hepco Pacifi c Pillow Blocks. The standard support rail is manufactured from aluminium alloy and comes in 600mm lengths only, these are then cut/butted together to fi t to the overall length of the one piece shaft.
Shaft – All types of shaft can be supplied drilled for customer assembly or fi tted to the support rails for ease of supply.
For standard 600mm aluminium support rails, X = half of T1 or T2. For support rails which require cutting/butting, customer to confi rm Dim X
AE
V
H
t
dM
N
O1 U1
O2
U2
X XT1/T2
600 +0.5-1.5
145˚
X = 1/2 hole pitch T1 or T2
Shaft & Support Rail Fully Assembled Simply prefix the shaft reference with AU Example – AU NIM 20 X L2000 T2
Drilled Shaft Only Simply state the shaft reference and add T1 or T2 depending upon shaft hole centres required Example – NIM 20 X L2000 T2
Support Rails Only Aluminium Support Rails supplied in 600mm lengths only. Simply state whether T1 or T2 drilling is required Example – Support Rail for 20mm Shaft T2 Hole Centre – SR20 – T2
For Shaft Diameter d H1
±0.01 A V M O1 U1 N E t O2 SQ.
U2DIN7980 T1 T2
12 12 22 40 5 5.8 M 4X20 4 8 29 4.5 M 4X12 4 75 12016 16 26 45 5 7 M 5X20 5 9 33 7.6 M 5X16 5 100 15020 20 32 52 6 8.3 M 6X25 6 11 37 8.6 M 6X16 6 100 15025 25 36 57 6 10.8 M 8X30 8 15 42 9 M 6X16 6 120 20030 30 42 69 7 11 M10X35 10 17 51 10 M 8X25 8 150 20040 40 50 73 8 15 M10X40 10 19 55 9.5 M 8X25 8 200 30050 50 60 84 9 19 M12X45 12 21 63 11.2 M10X30 10 200 300
15
Aluminium Shaft Supports
d
L
L2
D
Spigot One end Both ends
Option A
d
L2
D
Threaded Spigot One end Both ends
Option B
Undercut to DIN 76
d
L2
D
Drilled and Tapped One end Both ends
Option C
A/F
L2
D
Single Flat Double FlatOne end Both ends
Option D
Please send drawing Please send drawing
HepcoMotion can undertake shaft machining to standard ed as shown below or specials to customers’ drawings.
We canmachine 1 off or 100 off with fast delivery. Special steels and non standard toleranced material is also available. Please speak to our sales dept 01884 257000 for further information.
Part No.Nominal
Shaft Diameter
Major Dimensions Mounting Bolt Designation
Weightgh E W L F G P B S
ASS 10 10 17 18.5 37 10 30 5 18 28 4.5 M4 24ASS 12 12 20 21 42 15 35 5.5 20 32 5.5 M5 30ASS 16 16 25 25 50 15 42 6 26 40 5.5 M5 40ASS 20 20 30 30 60 20 50 8 32 45 5.5 M5 70ASS 25 25 35 37 75 25 58 9 38 60 6.6 M6 130ASS 30 30 40 42 84 30 68 10 45 68 9 M8 180ASS 40 40 50 54 108 30 86 12 56 86 11 M10 420ASS 50 50 60 65 130 40 100 14 80 108 11 M10 750
16
Housing and Shaft tolerance
Assembly
Housing is essential to use Hepco’s super ball bushing and service life and accuracy is affected by the inner tolerance of housing.
You can refer to table 2~7 about housing and shaft tolerance to use super ball bushing.
Hepco’s Super Ball Bushing is very precise so it must be handled with meticulous care. Use of a jig(see illustration) is recommended for insertion into a housing and Care should be taken not to exert pressure on the ball reatainer or seals.
The edge of the housing bore must be charmfered as well as the ends of the shaft are also chamfered. And the WON Super Bushing is not tilted when it is pushed onto the shaft.
Reducing load capacity in short-stroke applicationIn short stroke application the service life of the Hepco shafts is shorter than that of the Super Ball Bushing. For this reason the life can be shorten up to about 70% by the stroke.
Table 3. European type Unit : mmPart No.
Inner Diameter(D)
Tolerance(H7)+0.021
0+0.025
0+0.030
0
SB 1626
SBE 2032
SBE 2540
SBE 3047
SBE 4062
SBE 5075
Table 6. European type Unit : mmPart No.
Shaft Diameter
Tolerance(h6)0
-0.0110
-0.0130
-0.016
SB 1616
SBE 2020
SBE 2525
SBE 3030
SBE 4040
SBE 5050
Fig 9.
17
Assembly
Tolerance of Housing BoreThe recommended housing and shaft tolerances are shown in the following table
Clearance of Outer Sleeve and ShaftNormal fi t is standard for using of Linear Bushing with LM shaft, and for without clearance, Tight fi t is also available.
Note 1) When clearance after installation is required to minus, Allowable value of radial clearance is not
allowed to exceed the value in the table.
Note 2) Axial clearance of SH, SHW, SHO type are same as High grade.
Table 4. Tolerance for House Bore
Part No. GradeHigh(H)
Normal Fit Tight FitType Case
Table 5. Tolerance for Shaft Diameter
Part No.Type LM Shaft
Grade Normal Fit Tight FitHigh(H)
18
Load / Life
Life Calculation
Basic Dynamic Rating (C)The basic Dynamic Load Rating (C) is the maximum continuous load that can be applied to a bearing with a 90% probability that a working life of 50 km will be achieved.
There are three basic factors to the load calculation that may need to be applied depending on the application conditions.
Shaft hardness factor (fH)The hardness of the shaft should be 60 RC +/- 2, refer fi g 45 for shaft hardness factors.
Temperature factor (fr)Ball bushings in this range are designed to work at a maximum temperature of 100 deg C, for temperatures higher than this please apply the temperature factor as indicated in fi g 6.
Load direction factor (fb)Load capacities are affected by the position of the applied load in relation to the ball bushing ball track circuit as fi g 7. Fig 8 shows the factors to be applied for the various load positions around the circumference of the bushing.
Basic Static Load Rating (C0)The Basic Static Load Rating (C0) is the static load that will permanently cause deformation of the bushing ball track equivalent to 0.0001 of the ball diameter. It is good practice to limit the maximum static force to 80% maximum of the static load rating.
Fig 5. Hardness factor (fH)
Hard
ness
facto
r (fH)
Raceway Hardness HRC
Tem
pera
ture
facto
r (fT)
Linear motion system temperature ° C
Fig 6. Temperature factor (fT)
LCPfHfT
: Running distance life: Basic dynamic load rating: Applied load: Hardness factor(fi g 5.): Temperature factor(fi g 6.)
(km)(N)(N)
19
Lubrication
For best performance and to achieve a long and trouble free life ball bushings require lubrication either oil or grease.
Grease LubricationFor grease lubrication the anticorrosive protection oil should be removed prior to assembly ensuring that the bearing is dry before applying grease.
Grease should be applied directly to the ball circuits prior to fi tting, generally a lithium soap grease ISO viscosity grade 2 is recommended for general use.
Oil Lubrication.For oil lubrication it is not necessary to remove the anticorrosive protection from the bushing. The viscosity grade will be dependent on the operating temperature, please see the chart below
For most effective lubrication oil should be applied between two assembled bushings as shown in Fig 4 where only seals are fi tted to the outside of each bearing.
Periodic checking of the installation is recommended whether oil or grease is concerned in order to check that the bushing is not running dry.
Fig 4.
Operating Temp. Viscosity-30° C ~ 50° C50° C ~ 80° C
VG 15 ~ 46 VG 46 ~ 100
20
Part Number
Hepco’s Linear Ball Bushing
Model- : Standard SeriesE : European Series
Type- : Closed typeOP : Open type
Type- : StandardL : Long(Double-wide)
Outer Diameter of Shaft
Seal- : No SealUU : Seals on both sides
Flange Option- : No FlangeF : Round TypeK : Square Type
Standard type
Possible mounting methods are illustrated in Fig 6. and Fig 7. Mount a Linear Bushing with retaining rings and cover plates.
Fig 6. Mounting with retaining rings Fig 7. Mounting with cover plates
21
HepcoMotion® Product Range
GV3Linear Guidance and Transmission System
SBDSealed Belt
Drive
MHDHeavy Duty Track Roller
Guidance System
HDS2Heavy DutySlide System
MCSAluminium Frame
and MachineConstruction System
DTSDriven Track System
HDRTHeavy Duty Ring Slides
and Track System
DLSLinear Transmission and
Positioning System
Vee Slide Linear Guidance Systems
SL2Stainless Steel Based
Slide System
HTSTelescopic Ball Bearing
Slides
PDU2Profi le Driven Unit
HPSPowerslide-2 Guided
Rodless Cylinder
PSD120Profi le Screw Driven Unit
PRT2Precision Ring and
Track System
HDLSHeavy Duty Driven
Linear System
BSPBallscrew Premier
Product Range HepcoMotion® – Exclusive European partners and distributors for Bishop-Wisecarver since 1984.
®
Single Edge Slide System
LoPro®
Aluminium Based Slide System
UtiliTrak®
Lightweight U Channel Guideway
For further information on HepcoMotion® products – please request our leafl et ‘FPL’
Lower Moor Business Park, Tiverton Way, Tiverton, Devon, England EX16 6TG Tel: +44 (0)1884 257000 Fax: +44 (0)1884 243500
E-mail: [email protected]
CATALOGUE No.HLG 01 UK © 2014 Hepco Slide Systems Ltd.Reproduction in whole or part without prior authorisation from Hepco is prohibited. Although every effort has been made to ensure the accuracy of the information in this catalogue, Hepco cannot accept liability for any omissions or errors. Hepco reserves the right to make alterations to the product resulting from technical developments.Many Hepco products are protected by: Patents, Copyright, Design Right or Registered Design. Infringement is strictly prohibited and may be challenged in law. The Customer’s attention is drawn to the following clause in Hepco’s conditions of sale:‘It shall be the Customer’s sole responsibility to ensure that goods supplied by Hepco will be suitable or fi t for any particular application or purpose of the Customer, whether or not such application or purpose is known to Hepco. The Customer will be solely responsible for any errors in, or omissions from, any specifi cations or information the Customer provides. Hepco will not be obliged to verify whether any such specifi cations or information are correct or suffi cient for any application or purpose.’Hepco’s full conditions of sale are available on request and will apply to all quotations and contracts for the supply of items detailed in this catalogue.H M h d f H Sl d S L d