Prevailing Torque Type

With FINE U-NUT, variable positioning at the appropriate location is possible and torque management is also easy. This groundbreaking locknut for use with bearings makes unnecessary of machining keyways on shafts, lockwashers, and a high degree of skill for installation. FINE U-NUT improves the rotational balance of bearings that provide power in all machine industries. With FINE U-NUT which this groundbreaking locknut, variable positioning at the appropriate location is possible and torque management is also easy and it makes unnecessary of machining keyways on shafts, lockwashers for installation....

It's a prevailing-torque type locknut. It provides the O stable locking performance and it can help you reduce the total cost. It's a prevailing-torque type precision locknut. 2 Fric-tion Rings maintain high locking performance, and it -j shows high accuracy of bearing surface runout by processing the thread and bearing surface at the same time. The useful TOOL SET for FINE U-NUT and TWIN FU-NUT. -J5

With FINE U-NUT, unlike lockwasher, variable positioning at the appropriate location is possible and torque management is also easy. This groundbreaking locknut for use with bearings makes unnecessary of machining key ways on shafts, lockwashers, and a high degree of skill for installation. FINE U-NUT improves the rotational balance of bearings that provide power in all machine industries. Reduction of equipment rotation loss and a reduction of power consumption are also realized. Features Reusability Simple Adjustment Labor Saving and Simplified Assembly Shaft Balancing Weight Saving Reuse is...

[Structure and Function The Friction Ring touches the shaft screw threads, and stress (P) is produced through a spring effect when the nut is tightened. Along with a reaction force (P')t a frictional torque (prevailing torque) that presses against the shaft screw threads and prevents free rotation is produced. Prevailing lorque is a frictional torque when Friction Ring touches the shaft screw threads. * According to our test results Even after using 10 cycles, the reduction of prevailing torque value is slight, so you can reuse it. [Test Conditions] Bolt thread accuracy: JIS 6g Surface treatment:...

Machining of key ways on shafts is unnecessary [Installation Instructions Place the bearing nut Screwing the bearing nut and preload for bearing, then the teeth of the lock washer engage with shaft. Screwing the FINE U-NUT and preload for bearing.

Test Conditions

Material (standard items) Nut body • • • S45C-H SS400 SUS304 Friction ring SUS301 Thread accuracy: IS06H Unit: mm * Specify Part No.when placing an order. * Consult us If left handed, special shape or surface treatment Is needed. * Materials Include equivalent of each materials. * Dimension may change for Improvement. * Emin = m + 2.0P

Apply lubricant after checking that the tip of the thread portion of the shaft has a chamfer that is equivalent to the distance of 1 pitch. When the shaft has low hardness, use lubricant with especially high lubricating properties. Manually screw the nut on until the Friction Ring touches the tip of the thread portion of the shaft. * The nut cannot be installed from the Friction Ring side. Press down on the axis portion of the ratchet handle and tighten by lightly turning the ratchet. Confirming the Friction Ring has contacted the shaft thread or the inner ring of bearing and the seat surface...

The first in the industry, prevailing-torque type precision locknut. The FINE U-NUT locking function is strengthened by two Friction Rings. It has high accuracy of bearing surface runout by processing the thread and bearing surface at the same time. "TWIN FU-NUT" has high accuracy of bearing surface runout and locking performance and help you to maintain the accurate bearing rotation. Features Improve functionablity (Please refer to the chart and table on the right side) High accuracy of thread High accuracy of runout

As shown in the figure, the two Friction Rings and a spacer that are secured to the top face of the nut. These two Friction Rings are positioned so that the stress (P) produced by each of spring effect act evenly and symmetrically against the shaft centre, and a structure, and mechanism in which bearings can be fastened with an even surface load (F) is achieved. Prevailing Torque is a frictional torque when Friction Ring touches the shaft screw threads. Maximum Installation Torque: 1 cycle Minimum Removal Torque: 1 cycle - - - - Maximum Installation Torque: 5cycles ----Minimum Removal Torque:...

Phosphate conversion coating Thread accuracy: IS04H Unit: mm * Specify Part No .when placing an order. Automatic processing machine 13

Position a bearing on the shaft. Apply lubricant after checking that the tip of the thread portion of the shaft has a chamfer that is equivalent to the distance of 1 pitch. I Use "tightening tool made especially for FINE U-NUT". * Hook wrenches are also available. TWIN FU-NUT Manually screw the nut on until the Friction Ring touches the tip of the threaded portion of the shaft. * The nut cannot be installed from the Friction Ring side. Press down on the axis portion of the ratchet handle and tighten by lightely turning the ratchet. Check that bearing inner ring and TWIN FU-NUT bearing surface...

Dimension Table •Extension Bar (3/8"): 1 piece (9.52 x75mm) •Extension Bar (1/2"): l piece (12.7 xi 50mm) •Steel Case : Ibox (400 x 150 x70mm)

FINE U-NUT / Tightening Socket Handle 11-20 FINE U-NUT / M55-M100 Tightening Tool Items * When placing an order please specify Part No.

FINE U-NUT TWIN FU-NUT This product is used for especially safety position.Observe strictly the following items when using. This product is used for especially safety position.Observe strictly the following items when using. •Be sure to clean the shaft threads and FINE U- NUT before installing. •Be sure to clean the shaft threads and TWIN FU-NUT before installing. •Thread accuracy IS06h for the shaft thread is recommended. •The thread portion tip should have a chamfer equivalent to the distance of 1 pitch. •The thread and chamfer portion should be free from burrs. IThread accuracy IS04h for the...