The important accuracy requirements of a locknut bearing and the V-thread on a ballscrew or spindle are the fitness between the two and the squareness of the end where the locknut attaches the bearing. These factors directly affect the service life, reliability, and quality of the bearings and the ballscrews/spindles; this, of course, also has an effect on the image and quality of your products.
Our High Precision Lock Nuts are specially produced to meet your high demanding requirements.
Technical Details
Product Name: High Precision Lock Nuts, Clasp Locking Precision Lock Nuts
Series: K, KM/K
Shape: Round
Material: 42CrMo
Hardness: HRC 28-32
Thread Accuracy: ISO 4H
Manufacturing Method: High Precision Turning
Run Out: 0.002mm - 0.005mm
Applications: Ballscrews, High Precision Spindles, etc.
Features:
Our K series Clasp Locking Precision Lock Nuts use the elasticity of the steel body itself, axial lockings and forced locking. The locking capabilities of this series are more than three times higher comapred to the traditional lock nuts. The K series precision lock nuts use 4 to 8 high-strength screws to lock the threads through axial deformation. It is suitable for harsh working conditions where locknuts are easily loosened and high torque is required. The deflection accuracy of the nut can be adjusted by adjusting the tightening force of the axial screws.
Drawing and Data Sheet of K series Clasp Locking Precision Lock Nuts
| Model No./Thread | D | h | d | n - m x L | n | b | c | Max. Nm |
| K M16 x 1.5 | 34 | 18 | 29 | 4 - M4 x 12 | 4 | 4 | 24 | 3.5 |
| K M17 x 1.0 | 37 | 18 | 32 | 4 - M4 x 12 | 4 | 4 | 26 | 3.5 |
| K M18 x 1.5 | 38 | 18 | 33 | 4 - M4 x 12 | 4 | 4 | 28 | 3.5 |
| K M20 x 1.0 | 40 | 18 | 35 | 4 - M4 x 12 | 4 | 4 | 30 | 3.5 |
| K M20 x 1.5 | 40 | 18 | 35 | 4 - M4 x 12 | 4 | 4 | 30 | 3.5 |
| K M22 x 1.5 | 42 | 18 | 37 | 4 - M4 x 12 | 4 | 4 | 32 | 3.5 |
| K M24 x 1.5 | 44 | 18 | 39 | 4 - M4 x 12 | 4 | 4 | 34 | 3.5 |
| K M25 x 1.5 | 45 | 20 | 40 | 4 - M4 x 14 | 4 | 5 | 35 | 3.5 |
| K M26 x 1.5 | 45 | 20 | 40 | 4 - M4 x 14 | 4 | 5 | 35 | 3.5 |
| K M27 x 1.5 | 46 | 20 | 43 | 4 - M4 x 14 | 4 | 5 | 37 | 3.5 |
| K M28 x 1.5 | 46 | 20 | 43 | 4 - M4 x 14 | 4 | 5 | 37 | 3.5 |
| K M30 x 1.5 | 48 | 20 | 45 | 4 - M4 x 14 | 4 | 5 | 39 | 3.5 |
| K M32 x 1.5 | 50 | 22 | 47 | 4 - M4 x 16 | 4 | 5 | 41 | 3.5 |
| K M33 x 1.5 | 50 | 22 | 47 | 4 - M4 x 16 | 4 | 5 | 41 | 3.5 |
| K M35 x 1.5 | 53 | 22 | 50 | 4 - M4 x 16 | 4 | 5 | 44 | 3.5 |
| K M38 x 1.5 | 56 | 22 | 53 | 4 - M4 x 16 | 4 | 5 | 47 | 3.5 |
| K M39 x 1.5 | 56 | 22 | 53 | 4 - M4 x 16 | 4 | 5 | 47 | 3.5 |
| K M40 x 1.5 | 58 | 22 | 55 | 4 - M4 x 16 | 4 | 5 | 49 | 3.5 |
| K M42 x 1.5 | 60 | 22 | 55 | 4 - M4 x 16 | 4 | 5 | 51 | 3.5 |
| K M45 x 1.5 | 68 | 22 | 63 | 6 - M4 x 18 | 6 | 6 | 57 | 3.5 |
| K M48 x 1.5 | 69 | 25 | 65 | 6 - M4 x 18 | 6 | 6 | 58 | 3.5 |
| K M50 x 1.5 | 70 | 25 | 66 | 6 - M4 x 18 | 6 | 6 | 60 | 3.5 |
| K M52 x 1.5 | 72 | 25 | 68 | 6 - M4 x 18 | 6 | 6 | 62 | 3.5 |
| K M55 x 1.5 | 75 | 25 | 71 | 6 - M4 x 18 | 6 | 6 | 65 | 3.5 |
| K M55 x 2.0 | 75 | 25 | 71 | 6 - M4 x 18 | 6 | 6 | 65 | 4.5 |
| K M56 x 1.5 | 75 | 25 | 71 | 6 - M4 x 18 | 6 | 6 | 70 | 4.5 |
| K M58 x 1.5 | 84 | 26 | 79 | 6 - M5 x 20 | 6 | 6 | 70 | 4.5 |
| K M60 x 1.5 | 84 | 26 | 79 | 6 - M5 x 20 | 6 | 6 | 72 | 4.5 |
| K M60 x 2.0 | 84 | 26 | 79 | 6 - M5 x 20 | 6 | 6 | 72 | 4.5 |
| K M62 x 1.5 | 86 | 28 | 82 | 6 - M5 x 20 | 6 | 6 | 75 | 4.5 |
| K M64 x 1.5 | 86 | 28 | 82 | 6 - M5 x 20 | 6 | 6 | 75 | 4.5 |
| K M65 x 1.5 | 88 | 28 | 84 | 6 - M5 x 20 | 6 | 6 | 77 | 4.5 |
| K M65 x 2.0 | 88 | 28 | 84 | 6 - M5 x 20 | 6 | 6 | 77 | 4.5 |
| K M68 x 1.5 | 93 | 28 | 87 | 6 - M5 x 20 | 6 | 7 | 80 | 4.5 |
| K M68 x 2.0 | 93 | 28 | 87 | 6 - M5 x 20 | 6 | 7 | 80 | 4.5 |
| K M70 x 1.5 | 95 | 28 | 89 | 6 - M5 x 20 | 6 | 7 | 82 | 4.5 |
| K M70 x 2.0 | 95 | 28 | 89 | 6 - M5 x 20 | 6 | 7 | 82 | 4.5 |
| K M72 x 1.5 | 97 | 28 | 91 | 6 - M5 x 20 | 6 | 7 | 84 | 4.5 |
| K M75 x 1.5 | 100 | 28 | 94 | 6 - M5 x 20 | 6 | 7 | 87 | 4.5 |
| K M75 x 2.0 | 100 | 28 | 94 | 6 - M5 x 20 | 6 | 7 | 87 | 4.5 |
| K M80 x 2.0 | 110 | 32 | 103 | 6 - M6 x 22 | 6 | 8 | 95 | 4.5 |
| K M85 x 2.0 | 115 | 32 | 108 | 6 - M6 x 22 | 6 | 8 | 100 | 8 |
| K M90 x 2.0 | 120 | 32 | 113 | 6 - M6 x 22 | 6 | 8 | 105 | 8 |
| K M95 x 2.0 | 125 | 32 | 118 | 6 - M6 x 22 | 6 | 8 | 110 | 8 |
| K M100 x 2.0 | 130 | 32 | 123 | 6 - M6 x 22 | 6 | 8 | 115 | 8 |
| K M105 x 2.0 | 135 | 32 | 128 | 6 - M6 x 22 | 6 | 8 | 120 | 8 |
| K M110 x 2.0 | 140 | 32 | 133 | 6 - M6 x 22 | 6 | 8 | 125 | 8 |
| K M115 x 2.0 | 145 | 34 | 137 | 6 - M6 x 22 | 6 | 8 | 130 | 8 |
| K M116 x 2.0 | 145 | 34 | 137 | 6 - M6 x 22 | 6 | 8 | 130 | 8 |
| K M120 x 2.0 | 155 | 36 | 146 | 6 - M6 x 25 | 6 | 8 | 136 | 8 |
| K M130 x 2.0 | 165 | 36 | 155 | 6 - M6 x 25 | 6 | 8 | 148 | 8 |
| K M130 x 3.0 | 165 | 38 | 155 | 6 - M6 x 25 | 8 | 8 | 148 | 8 |
| K M140 x 2.0 | 178 | 38 | 168 | 8 - M6 x 25 | 8 | 10 | 160 | 8 |
| K M140 x 3.0 | 178 | 38 | 168 | 8 - M6 x 25 | 8 | 10 | 160 | 8 |
| K M150 x 2.0 | 190 | 38 | 178 | 8 - M6 x 25 | 8 | 10 | 170 | 8 |
| K M160 x 3.0 | 205 | 40 | 190 | 8 - M8 x 30 | 8 | 10 | 178 | 18 |
| K M170 x 3.0 | 215 | 40 | 203 | 8 - M8 x 30 | 8 | 10 | 193 | 18 |
| K M180 x 3.0 | 230 | 40 | 215 | 8 - M8 x 30 | 8 | 10 | 205 | 18 |
| K M190 x 3.0 | 240 | 40 | 225 | 8 - M8 x 30 | 8 | 10 | 215 | 18 |
| K M200 x 3.0 | 245 | 40 | 233 | 8 - M8 x 30 | 8 | 10 | 223 | 18 |
| K M210 x 4.0 | 265 | 40 | 253 | 8 - M8 x 30 | 8 | 10 | 243 | 18 |
| K M220 x 3.0 | 265 | 40 | 253 | 8 - M8 x 30 | 8 | 10 | 243 | 18 |
| K M220 x 4.0 | 265 | 40 | 253 | 8 - M8 x 30 | 8 | 10 | 243 | 18 |
| K M240 x 3.0 | 285 | 42 | 275 | 8 - M10 x 30 | 8 | 10 | 263 | 18 |
| K M260 x 3.0 | 305 | 42 | 295 | 8 - M10 x 30 | 8 | 12 | 283 | 35 |
| K M260 x 4.0 | 305 | 42 | 295 | 8 - M10 x 30 | 8 | 12 | 283 | 35 |
| K M280 x 4.0 | 325 | 42 | 315 | 8 - M10 x 30 | 8 | 12 | 303 | 35 |
| K M300 x 4.0 | 345 | 42 | 335 | 8 - M10 x 30 | 8 | 12 | 323 | 35 |
Notes:
Non-Standard Precision Locknuts are available upon request.
The above data is for reference only, we may change the specs without prior notice.
1Nm = 10.2kgf.cm = 0.73lb.ft
Incoporated in 1999, HOLK Bearing leads the way in the design and manufacture of quality Bearing Housings, Split Plummer Blocks, Bearing Adapter Sleeves, Withdrawal Sleeves, Precision Lock Nuts, Locking Assemblies, Hydraulic Nuts, Bearings and accessories. We pride ourselves on an immediate and dedicated response to standard and special bearing housing solutions.
HOLK's maximum bearing housing fabrication capability: up to 5 tons/pc
We produce top-notch quality Split Plummer Blocks worth more than US$1,000,000 to a big famous European bearing company every year.
We manufacture premium quality Bearing Adapter Sleeves worth more than US$500,000 to a big famous European bearing company every year.
