7YRS
HSIANG KAI FU CO., LTD.
886-4-23502590
886-4-23503161
No.9, Jingke 6th Rd., Nantun Dist., Taichung City 408, Taiwan
www.nikki.com.tw

Products

Precision Grinding Locknuts
MRRA Precision Locknut (Radial Locking)
MRRA 系列 MRRA Series

The setscrews of locknut intersect a 90° angle with axis which drive the locking brass perfectly stuck on the thread of shaft.

‧No thrust washer or keyway needed.
‧Easy to assemble and disassemble.
‧Can be re-used if handled properly.
‧The series locknut is designed for special area in where space is limited.
‧The connecting face and thread area are all produced by high precision grinding process.

‧Material:JIS SCM440/
DIN42CrMo4/AISI 4140

‧Hardness:HRC 28-32

‧Precision:ISO 4H

‧Thread Run-out with Axial:
0.002 mm

Specification

NIKKI Product Spec:

TYPE Dimensions Screw Screw Torque
d0 h g t d DIN MAX kg-cm
MRRA15/32  M15X1.0P 32 20 4 2 27 M5 48
MRRA17/38  M17X1.0P 38 5 33
MRRA20/38  M20X1.0P 38 33
MRRA20/38  M20X1.5P 38 33
MRRA20/52  M20X1.0P 52 25 47
MRRA20/52  M20X1.5P 52 47
MRRA25/45  M25X1.5P 45 20 40 M6 80
MRRA25/58  M25X1.5P 58 24 6 2.5 52
MRRA30/52  M30X1.5P 52 22 5 2 47
MRRA30/65  M30X1.5P 65 30 6 2.5 59
MRRA35/58  M35X1.5P 58 22 52
MRRA35/70  M35X1.5P 70 30 64
MRRA40/62  M40X1.5P 62 22 56 M8 190
MRRA40/75  M40X1.5P 75 30 69
MRRA45/68  M45X1.5P 68 24 62
MRRA45/85  M45X1.5P 85 32 7 3 78
MRRA50/75 M50X1.5P 75 25 6 2.5 68
MRRA50/92  M50X1.5P 92 32 8 3.5 84
MRRA55/98 M55X2.0P 98 90
MRRA60/98 M60X2.0P 98 90
MRRA65/105 M65X2.0P 105 97
MRRA70/110 M70X2.0P 110 35 102
MRRA75/125 M75X2.0P 125 38 117
MRRA80/120 M80X2.0P 120 35 10 4 105
MRRA90/130 M90X2.0P 130 38 120
MRRA90/155 M90X2.0P 155 146
MRRA100/140 M100X2.0P 140 12 5 128 M10 360
MRRA110/180 M110X2.0P 180 40 14 6 167
MRRA130/210 M130X2.0P 210 16 7 205
MRRA150/230 M150X2.0P 230 42 18 8 215 M12 560

Remark

‧When ordering above products, please refer to the TYPE & Pitch
‧To prevent above locknuts are in short supply, please send your order in advance.

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