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I'll throw this out as my experience as a YMMV experience for other potential purchasers. . .(I sincerely hope others have had unfaltering success with it). . .I purchased the Sugino OX901D (NOT to be confused with the OX601D) 44/30 brand new and was dissatisfied enough that I finally purchased an Ultegra 46/36 to replace it.
I could never get the axle compression bolt on the OX901D to hold the non-driveside crankarm in place on the bottom bracket "axle". It would come loose literally every ride.
I hand tightened (it was not overtightened), then tightened to spec (torque wrench), and then put threadlocker on the axle compression bolt (after just hand-tightening and torque wrenching didn't work). I alternated tightening the non-driveside crankarm bolts a half turn at a time to ensure an even load distribution in each axle compression bolt tightening instance. There was no side-to-side or bearing play in the crankset or bottom bracket after I would tighten it, and it would spin freely without any grinding or binding while in the stand. Nothing was/is broken or cracked that I can see.
I rode it exclusively on paved asphalt trails, and the threads in both the crankarm (bottom bracket) axle and axle compression bolt and non-driveside crankarm bolts are completely intact. Both the Sugino and Ultegra cranks were used with the same Wheels Manufacturing bottom bracket.
I've done the exact same installation procedure I used with the Sugino OX901D with the Ultegra and two other SRAM cranks (but without the threadlocker in the instances of the SRAM and Shimano cranks) and haven't had to re-tighten any of them, and they've all been as smooth as butter with no play.
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