Spindle key

[Goldnboy 910]

I was reading through SB #429 and it shows the 3/4" spindles woodruff key removed and a jam nut and lock washer used. Have any of you done this? I see the lockwasher is NLA so is it a ordinary lockwasher? Is the jam nut a locknut style? That would would be odd because I never seen a lockwasher used with a locknut before.

 

[gwest_ca-(File Mod) 11,033]

Just a standard spring lock washer and regular nut. The direction of rotation keeps it tight. The only requirement is that the pulley spins freely on the shaft before the lock washer and nut are added so it can tighten if necessary. A good time to apply Never-seize to the shaft to ease removal later.

This is how all the spindles were from the factory since the last design change.

 

Garry

[953 nut 55,081]

Jam nuts tend to be a bit thinner than regular nuts. You can get six of them for less than $ 6.00 including shipping on 

6 Pack 3/4-16 RH STEEL JAM NUT NUTS

[gwest_ca-(File Mod) 11,033]

I doubt a thin jamb nut or the spindle threads would withstand the 50-90 Ft. Lbs. of torque specified.

 

Garry

[953 nut 55,081]

28 minutes ago, gwest_ca said:

I doubt a thin jamb nut or the spindle threads would withstand the 50-90 Ft. Lbs. of torque specified.

 

Garry

These are the nuts that I use to retain the blades on my  mowers and I use a pneumatic impact gun to install and remove them. 

Jam nut

From Wikipedia, the free encyclopedia

 

 

Jump to navigationJump to search

 

Standard nut employed as a jam nut against another standard nut

A jam nut is a low profile type of nut, typically half as tall as a standard nut. It is commonly used as a type of locknut, where it is "jammed" up against a standard nut to lock the two in place. It is also used in situations where a standard nut would not fit.

The term "jam nut" can also refer to any nut that is used in the same function (even a standard nut used for the jamming purpose). Jam nuts, other types of locknuts, lock washers, and thread-locking fluid are ways to prevent vibration from loosening a bolted joint.

Use[edit]

A jam nut is often used when a nut needs to be locked in place without clamping against another object. The jam nut essentially acts as the "other object", as the two nuts are tightened against each other. They can also be used to secure an item on a fastener without applying force to that object. This is achieved by first tightening one of the nuts onto the item. Then the other nut is screwed down on top of the first nut. The inner nut is then slackened back and tightened against the outer nut.

Jam nuts can also be used in situations where a threaded rod must be rotated. Since threaded rods have no bolt heads, it is difficult or impossible to apply torque to a threaded rod. A pair of jam nuts is used to create a point where a wrench may be used.

Jam nuts can be unreliable under significant loads. If the inner nut is torqued more than the outer nut, the outer nut may yield. If the outer nut is torqued more than the inner nut, the inner nut may loosen up.^[1][2]

References[edit]

1. ^ Barrett, Rich. "Fastener Design Manual". Retrieved March 20, 2009.
2. ^ "The Use of Two Nuts to Prevent Self Loosening". Retrieved May 18, 2014.

hide v t e Nuts

acorn nut axial barrel nut barrel nut cage nut cross dowel captive nut castellated nut clip-on nut coupling nut distorted thread locknut flange nut frangible nut insert nut interfering thread nut internal wrenching nut jam nut jet nut Keps nut knurled nut locknut lug nut Nyloc nut Palnut panel nut plate nut rivet nut self-aligning nut serrated face nut sleeve nut speed nut split beam nut split nut square nut swage nut T-nut T-slot nut weld nut well nut wingnut

[Achto 27,505]

17 hours ago, Goldnboy said:

That would would be odd because I never seen a lockwasher used with a locknut before.

 

That's because you've never worked with the genius's that I have to deal with every day.

[Goldnboy 910]

2 hours ago, 953 nut said:

These are the nuts that I use to retain the blades on my  mowers and I use a pneumatic impact gun to install and remove them. 

Jam nut

From Wikipedia, the free encyclopedia

 

 

Jump to navigationJump to search

 

Standard nut employed as a jam nut against another standard nut

A jam nut is a low profile type of nut, typically half as tall as a standard nut. It is commonly used as a type of locknut, where it is "jammed" up against a standard nut to lock the two in place. It is also used in situations where a standard nut would not fit.

The term "jam nut" can also refer to any nut that is used in the same function (even a standard nut used for the jamming purpose). Jam nuts, other types of locknuts, lock washers, and thread-locking fluid are ways to prevent vibration from loosening a bolted joint.

Use[edit]

A jam nut is often used when a nut needs to be locked in place without clamping against another object. The jam nut essentially acts as the "other object", as the two nuts are tightened against each other. They can also be used to secure an item on a fastener without applying force to that object. This is achieved by first tightening one of the nuts onto the item. Then the other nut is screwed down on top of the first nut. The inner nut is then slackened back and tightened against the outer nut.

Jam nuts can also be used in situations where a threaded rod must be rotated. Since threaded rods have no bolt heads, it is difficult or impossible to apply torque to a threaded rod. A pair of jam nuts is used to create a point where a wrench may be used.

Jam nuts can be unreliable under significant loads. If the inner nut is torqued more than the outer nut, the outer nut may yield. If the outer nut is torqued more than the inner nut, the inner nut may loosen up.^[1][2]

References[edit]

1. ^ Barrett, Rich. "Fastener Design Manual". Retrieved March 20, 2009.
2. ^ "The Use of Two Nuts to Prevent Self Loosening". Retrieved May 18, 2014.

hide v t e Nuts

acorn nut axial barrel nut barrel nut cage nut cross dowel captive nut castellated nut clip-on nut coupling nut distorted thread locknut flange nut frangible nut insert nut interfering thread nut internal wrenching nut jam nut jet nut Keps nut knurled nut locknut lug nut Nyloc nut Palnut panel nut plate nut rivet nut self-aligning nut serrated face nut sleeve nut speed nut split beam nut split nut square nut swage nut T-nut T-slot nut weld nut well nut wingnut

I did that when i was a kid all the time when i had no money working on the farm and was scavenging for anything!

[Achto 27,505]

@Goldnboy