ISO 606
DIN 8187
ISO 606
DIN 8187
Murtfeld – Tensioning systems (spann box)
Groeneveld Lubrication systems by Timken
Timken – Standard Chain Lubrication Systems (Brochure)
The calculator provide the Primitive Diameter of sprockets introducing the Chain Pitch and the Number ot Tooth.
PV-value express the load capacity of the sliding bearings. It is defined as the combination effect of the pressure of the object and the velocity at which it moves on the bearing surface. It is an estimation of the resistance capacity of the material against the frictional heating.
Lower PV value is suggested to be used during design to ensure longer service life of the bearing.
The calculator provide the PV-value (Pressure x sliding velocity) for several cases: Bushing rotation, oscillation and reciprocation; washer thrust rotation and oscillation; and plate reciprocation.It is recommended to check the values of pressure, velocity and pv-value for the studied material.
DIN EN ISO 898-1 (2009-09)
DIN EN ISO 3506-1 (2010-03)
The strength of standard ISO metric steel bolts is readily identified by means of a numerical code.
The code is comprised of two numbers separated by a dot. This dot is not a decimal marker but is merely a means of separating the two parts of the code. The number to the left of the dot when multiplied by 100 provides an indication of the Ultimate Tensile Strength (in MPa) while the number to the right when multiplied by 10 times the preceeding number gives the Yield Strength (in MPa)
Example: 8.8
Tensile Strength
8 x100 = 800MPa
Yield Strength
8 x 8 x 10 = 640 MPa
The calculator provide the force in manual clamping levers. A friction value will be assumed for the axis of rotation and the circumference of the eccentric. This friction values will have an important impact at the result of the clamping force.
The calculator provides the torque necessary in a power screw for raising or lowering a load. The collar torque friction is also calculated and it is included in the torque for raising and lowering. Self-locking and efficiency for raising are calculated. A self-locking screw will hold the load F in place without any application of torque.