- Examples
Example 1: Tapered roller bearing
In tapered roller bearings, run-out accuracy, a high level of axial rigidity and dynamic safety create a major contribution to perfect bearing operation: Radial stress applied to the tapered roller bearing generates axial forces (axial rigidity). Due to a lack of axial pretension (no axial friction), the intrinsic safety of the locknut is extremely important.
Example 6: Table structure
Due to the flat design, countersunk installation is possible without causing any interfering contours in the table surface. Straining of the structure due to a tilting locknut caused by thread flank play, or even opening under dynamic load are not possible due to the characteristic properties of the locknut.
Example 7: Tooling spindle
The low installation height of the MSF locknut makes it possible to create a compact drive side of the spindle. This configuration saves valuable installation space and minimises destructive rotating bending stress. At the same time, the benefits of a Spieth high-precision locknut are fully exploited.
- Benefits
Competitiveness through technological leadership – a strategy that calls for an economical increase in power density, efficiency and accuracy. Locknuts create the foundation for this.
Lower resource input
- No additional grooves or locking plates required.
- Free, infinitely variable and exact positioning.
- Fast, precise installation results.
- Simple to dismantle thanks to back-sprung diaphragm.
More success
- Optimum locking effect.
- High degree of run-out accuracy, even in the assembled state.
- High dynamic loading capacity.
- High dynamic rigidity.
- Dynamically balanced structure.
- Suitable for high speeds.
4 unique features – numerous benefits
- Secure
The locking system enables the application of high clamping forces to ensure that the nut is friction-locked onto the spindle thread. The load is applied to the thread across 360° symmetrically and evenly. The locking force and working load act in the same direction and cannot cancel each other out. This is the requirement for the highest locking effect while at the same time preserving the connecting components.
- Self-centering
The locking procedure is designed to exert a self-centring effect for the nut on the spindle thread. This is the prerequisite for ensuring a coaxial end position of the nut relative to the spindle and for a vertical orientation of the end face with respect to the connection assembly. For demanding applications, this effect can be used in a separate installation step specifically to minimise thread join play.
- Precise
All functional surfaces that determine precision are manufactured in a single set-up. And in contrast to other locking concepts, the precision is retained by design once it has been created, even during installation and operation.
- Consistent rigidity
Irrespective of the degree of pretension in the nut, the closed distribution of locking force ensures an intensive application of the thread flanks in the direction of the working load. The assembly process creates an elastic pretension in the join of the thread pairing, as a result of which the bearing area of the thread flanks and the rigidity of the join are significantly increased. Damaging micro-movements, caused by strong impulses or abrupt changes in the direction of force, are drastically reduced.
- Function
Functional Principle
In this example, based on a type MSF locknut. The principle is illustrated in a simplified diagram with enlarged thread flank play.
- Axial pret. Forces
MV = Pre-tensioning torque of the locknut [Nm]
FV = Required axial pretension force of the threaded connection [N]
B = Locknut-specific allowance [N], compensates face end relief due to the locking process
A = Constant [mm], includes the calculation factors for the respective thread width (catalogue value)
µA = Frictional coefficient for the end contact surface of the locknut Approximate value μA = 0.1 steel/steel
rA = Effective friction radius for the end contact face of the locknut [mm]
From locknut size MSW > M70
The tightening torque for the set screw is determined according to the following formula:
MD = Tightening torque per set screw [Nm]
FV = Required axial pretension force of the threaded connection [N]
A = Constant [mm], includes the Calculation factors for the respective thread width (catalogue value)
µD = Frictional coefficient for the end contact face of the set screw, Approximate value = 0.13
d6 = Dog point dia. of the set screw [mm] (catalogue value)
n = number of set screws
Order No.
click for request
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Name
CAD-Download
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Diameter in mm | Clamping screw | calc. factor A | Performance Data | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
d1 | d2 | d6 | h | ISR | MA | No. | Breaking Load | Breakaway Torque | |||
ISO-5H | h11 | Gr. | Nm | mm | kN | Nm | |||||
K-10302501 | M25x1,5 | 48 | 39 | 14 | 20 | 2.9 | 4 | 1.633 | 56 | 30 | |
K-10303001 | M30x1,5 | 53 | 44 | 15 | 20 | 2.9 | 4 | 1.921 | 79 | 38 | |
K-10303501 | M35x1,5 | 58 | 49 | 15 | 20 | 2.9 | 4 | 2.21 | 93 | 46 | |
K-10304001 | M40x1,5 | 63 | 54 | 15 | 20 | 2.9 | 4 | 2.5 | 96 | 52 | |
K-10304501 | M45x1,5 | 70 | 59 | 15 | 20 | 2.9 | 6 | 2.789 | 122 | 89 | |
K-10305001 | M50x1,5 | 75 | 64 | 16 | 20 | 2.9 | 6 | 3.079 | 136 | 99 | |
K-10305501 | M55x1,5 | 80 | 69 | 16 | 20 | 2.9 | 6 | 3.369 | 279 | 110 | |
K-10305502 | M55x2 | 80 | 69 | 16 | 20 | 2.9 | 6 | 3.43 | 271 | 116 | |
K-10306001 | M60x1,5 | 89 | 77 | 18 | 25 | 6 | 6 | 3.655 | 327 | 188 | |
K-10306002 | M60x2 | 89 | 77 | 18 | 25 | 6 | 6 | 3.719 | 317 | 192 | |
K-10306501 | M65x1,5 | 94 | 82 | 18 | 25 | 6 | 6 | 3.948 | 334 | 205 | |
K-10306502 | M65x2 | 94 | 82 | 18 | 25 | 6 | 6 | 4.008 | 325 | 208 | |
K-10307001 | M70x1,5 | 99 | 87 | 18 | 25 | 6 | 6 | 4.238 | 338 | 221 | |
K-10307002 | M70x2 | 99 | 87 | 18 | 25 | 6 | 6 | 4.297 | 328 | 224 | |
K-10307501 | M75x1,5 | 106 | 94 | 20 | 30 | 10 | 6 | 4.525 | 382 | 321 | |
K-10307502 | M75x2 | 106 | 94 | 20 | 30 | 10 | 6 | 4.587 | 372 | 318 | |
K-10308001 | M80x2 | 111 | 99 | 20 | 30 | 10 | 6 | 4.873 | 378 | 343 | |
K-10309001 | M90x2 | 121 | 109 | 20 | 30 | 10 | 6 | 5.453 | 388 | 384 | |
K-10310001 | M100x2 | 131 | 119 | 20 | 30 | 10 | 6 | 6.033 | 396 | 433 |
No product found or do you have a special application? We would also be happy to advise you on specialized solutions, which we can custom produce to meet your needs as your development partner. Simply get in contact with us - resp. you can fill out our request form for clamping sets/- sleeves / lock nuts - we’re looking forward to hearing about your project.
Request form for special elements Clamping sets/-sleeves / lock nuts
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