The model on this router is craftsman # 315 275000
Kevin1

 

Here ya go
Router Bits, Woodworking Supplies, Woodworking Tools - EagleAmerica.com

 

Adapter Bushings

MLCS Woodworking Adaptor Bushings and Ball Bearing Guides

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I would call the nearest parts ,Craftsman tools! I think that You will want the original Collete adapter. Most of them are made so they will not go in to the back of the opening.

 

Hi Kevin, OK, Craftsman lists two collect numbers here:
http://www.searspartsdirect.com/par...s/Router-Parts/Model-315275000/0247/0740000/P9030055/00001?blt=06&prst=&shdMod=

They would be
Item #34
on diagram
Collett assy
PART NUMBER: 974252-003

and

Item #35
on diagram
Collet assy
PART NUMBER: 974252-005

Unfortunately they don't give a better description and I couldn't get in the Chat line to ask.
It does like you would need items 33, 36 and 37 in addition to 34 or 35 in order to complete the assembly.
Hope this helps

 

welcome, Kevin

 

Have the same unit with a 1/4" collet and im in need of the 1/2" willing to do a trade

 

Welcome to the forum N/a.

This chat was from 2011, so the issue has probably been resolved.

If you have the same model router (315.275000), can't you buy a 1/2" collet?

 

there is a quarter inch collect available at sears parts. i have one i would be happy to trade with you. i must warn you that the half inch collect is not available as the manufacturer has discontinued its production
trappingdefense


demaio777 at gmail dot com

 

no, its no longer manufactured (Ryobi) and sears parts doesnt have a supply.
thanks for your interest