New MH series CAT-57133 - IKO NIPPON THOMPSON America - #9

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Load factor
Due to vibration and/or shocks during machine operation, the actual load on each rolling guide becomes greater in many cases than the theoretically calculated load. The applied load is generally calculated by multiplying the theoretically calculated load by the load factor indicated in Table 3.
Table 3 Load factor
Table 4 Dynamic equivalent load factor
Condition
X
Y
Fre = Fae
1
0.6
Fre < Fae
0.6
1
Operating conditions
f W
Smooth operation free from vibration and/or shocks
1 ~ 1.2
Normal operation
1.2 ~ 1.5
Operation with vibration and/or shocks
1.5 ~ 3
Dynamic equivalent load
When a load is applied in a different direction from the direction of the basic dynamic load rating of C-Sleeve Linear Way H or a complex load is applied, obtain the dynamic equivalent load to calculate the service life rating. Obtain the downward and lateral conversion loads from the load of each direction.
Fig.3 Load direction
F re = k r| F r+ — Im o|+—I M X
Static equivalent load
When a load is applied in a different direction from the direction of the basic static load rating of C-Sleeve Linear Way H or a complex load is applied, obtain the static equivalent load to calculate the static safety factor.
(4) (5)
To
Fae= k À Fa|+ I M yl •
Ty
where,
Fre :
Fae :
Fr :
Fa :
Mo :
MX :
My :
kr, ka :
Downward conversion load, N Lateral conversion load, N Downward load, N Lateral load, N Moment in To direction, N-m Moment in Tx direction, N-m Moment in Ty direction, N-m Conversion factor in the load direction
Po= kor Fr |+k0a |Fa|+ Co- M 0 1+ \m X + —r-1 M Y-
1 To' Tx' 1 Ty
(7)
where, Po : Static equivalent load, N-m
Fr : Downward load, N
Fa : Lateral load, N
Mo : Moment in To direction, N-m
Mx : Moment in Tx direction, N-m
My : Moment in Ty direction, N-m
kor, koa : Conversion factor in the load direction
(k 0r=1, k 0a=1)
C o : Basic static load rating, N
To : Static moment rating in To direction, N-m
Tx : Static moment rating in Tx direction, N-m
Ty : Static moment rating in Ty direction, N-m
(kr=1, ka=l)
C o : To :
TX : Ty :
Basic static load rating, N
Static moment rating in To direction, N-m
Static moment rating in Tx direction, N-m
Static moment rating in Ty direction, N-m
Obtain the dynamic equivalent load from the downward and lateral conversion loads.
P = XFre+YFae .......................................................................(6)
where, P : Dynamic equivalent load, N
X, Y : Dynamic equivalent load factor (see Table 4.)
Fre : Downward conversion load, N
Fae : Lateral conversion load, N
1N=0.102kgf=0.2248lbs. 1mm=0.03937mch

pageCatalog pdf di En 2012-05-22-30