Nikki SFZ Series Precision Lock Nuts

Manufacturer: Nikki Co., Ltd.
Model: SFZ Series

Features

The set screw is angled at 30 degrees to the axial direction and is designed to be divided into three parts (equally spaced 120 degrees apart).
This is a high-precision lock nut with a machined finish that has a runout accuracy of less than 5 microns in the thread direction.
Therefore, by tightening the set screws evenly from three directions, it is easy to achieve concentricity with the shaft, allowing for stable assembly with high precision and little runout in the axial direction in a short amount of time.
There are four grooves to make it easier to tighten the nut, and two chamfers on the outside. (M75 and below)
The threaded portion is also wider, allowing for stronger assembly in the axial direction.
It can be used when assembly space is limited.

Specification

Material	SCM440
Accuracy	ISO 4H

Standard Model List

Model number	Size							Set screw
Model number	D	h	g	t	d1	d2	L	Maximum torque Nm	Standard
SFZ10×0.75P	28	14	4	2	twenty three	11	twenty four	4.5	M5
SFZ12×1.0P	30	14			twenty five	13	27
SFZ15×1.0P	33	16			28	16	30
SFZ17×1.0P	37	18	5		33	18	34	8	M6
SFZ20×1.0P	40	18			35	twenty one	36
SFZ25×1.5P	44	20			39	26	41
SFZ30×1.5P	49	20			44	32	46
SFZ35×1.5P	54	twenty two			49	38	50
SFZ40×1.5P	65		6	2.5	59	42	60	18	M8
SFZ45×1.5P	70		6	2.5	64	48	65
SFZ50×1.5P	75	twenty five	7	3	68	52	70
SFZ55×2.0P	85	twenty five	7	3	78	58	80
SFZ60×2.0P	90	26	8	3.5	82	62	85
SFZ65×2.0P	95	28			87	68	90
SFZ70×2.0P	100				92	72	95
SFZ75×2.0P	105				97	77	100
SFZ80×2.0P	110	32			100	83	–
SFZ85×2.0P	120		10	4	110	88	–	35	M10
SFZ90×2.0P	125				115	93	–
SFZ95×2.0P	130				120	98	–
SFZ100×2.0P	135				125	103	–