Description
Internal Bull Nose Bit – Carbide Tipped.
The PRO-TECH Internal Bull Nose Router Bit 7/8″ x 1″ KP368461 router bit is used for creating a concave-shaped profile on the side of the workpiece in one pass. The design helps minimize kickback with a bearing guide that aids control and shaping resulting in a smooth edge that requires little or no sanding before applying the finish.
This router bit has a 12,7mm shank (shaft) that will fit most large routers. Please ensure that you select a router bit with a shank (shaft) size that will fit into your router collet. PRO-TECH router bits are manufactured in Taiwan.
Router Bit Maintenance
Router Bit Maintenance
Fortunately, this is pretty easy. The best way to prolong the life of a router
bit is to keep it clean. And what you need to do varies with the type of bit.
Note: Sharpening is extremely important too.
A. No Bearings:
To clean bits without bearings, first blow off any dust. Then remove any resin
that has built up. (Resin places a drag on the bit which can cause it to overheat
and burn.)
Resin removers are available. It’s the same stuff you use to clean your saw blades.
B. Bits with Bearings:
To clean bits with bearings, first, remove the bearing. Then clean the bit as
you did with non-bearing bits.
It’s important to remove the bearings because even though router bearings are
‘sealed,’ resin remover can sneak in and dissolve the bearing grease. If this were
to happen, you would be faced with the problem of trying to lubricate a sealed bearing.
Despite the claims of bearing grease sellers, we’ve never had much luck with
this. Once that grease is gone, just go buy a new bearing.
C. Bit Shanks:
Periodically inspect the shanks of your router bits for rust or burrs. Either
of these can be removed quickly with ScotchBrite®. Left on, they can
interfere with your ability to properly tighten the bit in the collet.
How Fast Should a Router be Running?
If you’ve got a router with variable speed, then you’ve got the power to improve
the quality of your cut. In general, the larger the bit, the slower the speed you
need. The perfect solution for dealing with varying bit sizes is a variable speed
router.
Here are general guidelines for most bits:
Hand Held Router Use
| Bit size |
Bit size |
rpm |
| Small – 12.7 mm |
1/16′ to 1/2′ |
22,000+ |
| 12,7 mm – 28,6 mm |
1/2 to 1 1/8′ |
14,000 – 18,000 |
| 28.6 mm – 50,8 mm |
1 1/8′ to 2′ |
12,000 – 14,000 |
Router Table Use
| Bit size |
Bit size |
rpm |
| 50,8 mm – 63,5 mm |
2′ to 2 1/2′ |
12,000 – 14,000 |
| 63,5 mm & larger |
2 1/2′ and up |
8,000 – 12,000 |
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