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KM/RN Series Square Precision Lock Nuts

KM/RN Series Square Precision Lock Nuts Admin Edit

Min. Order: 10 Piece/Pieces
Trade Term: FOB,CIF,FCA,EXW
Payment Terms: T/T
Place of Origin: Jiangsu, China (Mainland)
Means of Transport: Ocean, Land
Production Capacity: 10000 pcs/month
Packing: Neutral Carton...
Delivery Date: 30 days Brand Name: HOLK
Product Name: Precision Lock Nuts Series: KMRN Series, KM/RN Series
Material: S45C, C45 Hardness: HRC 24-28
Lateral Deflection: 0.002mm - 0.005mm Thread Tolerance: Metric Thread ISO 4H
Shape: Square Surface Treatment: Alkaline Oxidation (Phosphatizing)
Manufacturing Method: High Precision Turning Applications: lathes, grinders, milling machines, motors, shut-off valves, spindle and ball screws


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 fabricated to meet your demanding requirements.


Technical Details

Product Name: Square High Precision Lock Nuts

Series: KMRN

Shape: Square

Material: DIN C45, S45C

Hardness: HRC 24-28

Thread Accuracy:  ISO 4H

Manufacturing Method: High Precision Turning

Run Out: 0.002mm - 0.005mm

Applications: Ballscrews, High Precision Spindles, etc.


Features: Our square outer shape KMRN series precision locknut, one or two point locking brass screws in 90° position. Suitable for bearing supporting seat. Inner threads and end surface are simultaneously machined, assuring the assembly accuracy.


Drawing and Data Sheet of KMRN series Precision Lock Nuts

Model No.Size
MmDdhLT
KM/RN5M5 x 0.5M3 x 0.5 x 113.51052.712
KMRN6M6 x 0.75M3 x 0.5 x 114.51052.712
KMRN8M8 x 1.0M3 x 0.5 x 117136.5414
KMRN8M8 x 0.75M3 x 0.5 x 117136.5414
KMRN10M10 x 1.0M4 x 0.7 x 2201585.517
KMRN10M10 x 0.75M4 x 0.7 x 2201585.517
KMRN12M12 x 1.0M4 x 0.7 x 2221785.519
KMRN15M15 x 1.0M4 x 0.7 x 2252184.522
KMRN17M17 x 1.0M4 x 0.7 x 2302513924
KMRN20M20 x 1.0M4 x 0.7 x 2352611730
KMRN25M25 x 1.5M5 x 0.8 x 24333151035
KMRN30M30 x 1.5M6 x 24839201440
KMRN35M35 x 1.5M8 x 26046211450
KMRN40M40 x 1.5M8 x 26351251850

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.



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Category: Precision Lock Nuts