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When properly aligned, the roller stud should slip into the mounting member.
Do not force the stud into the mounting member as damage to the roller may occur.
When mounting rollers, do not torque the jam nuts beyond what is recommended or damage may occur.
Be sure that the mounting member is of sufficient thickness to support the applied loads.
| Stud Diameter | Dry Threads | Lubricated Threads |
| Less then 5/8" /16 mm | 15 ft. lb. / 20 Nm | 8 ft. lb. / 10 Nm |
| 5/8" /16 mm to 1" / 24 mm | 50 ft. lb. / 68 Nm | 25 ft. lb. / 34 Nm |
| Over 1" /24 mm | 100 ft. lb. / 136 Nm | 50 ft. lb. / 68 Nm |
heavy-duty thru-shafts designed specifically for use with yoke-style Load Runners idler-rollers.
Axial clamping of yoke-style rollers (through the bore) is required to prevent the bearing components from separating, causing loss of bearing adjustment and premature failure.
Shaft Style A - for roller sizes:
All metrics (HPCA, HPJA, HPVA) and inch sizes PLRY-, CLRY- and FLRY-1 ½� thru 7� + VLRY-2 ½� thru 8 ½�. |
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Shaft Style B - for roller sizes:
PLRY-and FLRY-8� thru 10� + VLRY-9 ½� thru 11 ½� |
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Stud ø Metric |
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Stud ø Inch |
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Hex Socket Size |
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Hex Socket Size |
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| ≤ 12 mm | 4 mm |
| 14 mm | 6 mm |
| 16-30 mm | 8 mm |
| ≥ 30 mm | 12 mm |
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| ≤ 1/2" | 3/16" |
| 5/8" - 7/8" | 5/16" |
| 1" - 1 1/4" | 1/2" |
| ≥ 2" | 5/8" |
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Flange Alignment
The shoulder on the flange end of a flanged yoke-style idler-roller serves as the dimensional reference point for accurate positioning of the roller flange with respect to the supported structure.
Orient each roller so that the flange is closest to the fixed (small diameter) end of the bolt or thru-shaft. (See drawing). When the bolt or thru-shaft is clamped, the reference shoulder will be pulled up tightly against the structure reference surface.
By mounting a string of flanged yoke-style rollers in this manner, all flanges will be properly aligned. |
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V-Groove Alignment
The sharp-radius corner of a V-grooved, yoke-style idler-roller indicates which shoulder should be used as a dimensional reference point for accurate alignment of a V-grooved roller with respect to the supported structure.
Orient each roller so that the sharp-radius corner is closest to the fixed (small diameter) end of the bolt or thru-shaft. (See drawing). When the bolt or thru-shaft is clamped, the reference shoulder will be pulled up tightly against the structure reference surface.
By mounting a string of V-grooved yoke-style rollers in this manner, all V-grooves will be properly aligned
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| Bearing Disassembly (If required) |
Tapered-roller-bearing assemblies used in Load Runners idler-rollers are pre-seet with custom-ground spacers for the correct running clearance. If for some reason, a bearing assembly is removed and then reassembled, the same cups, cones and spacers must be used.
Bearing assembly components cannot be mixed and matched. Even new cups or cones cannot be substituted in an existing assembly.
Osborn does not recommend disassembly and does not provide component parts. |
Application Considerations |
The customer assumes responsibility for proper selection and application of Osborn Load Runners, Cam Runners and Load Rails. Technical advice or review provided by Osborn International with respect to the use of Osborn products is given in good faith and without charge, and Osborn International assumes no obligation of liability for the advice given. Advice provided is to be accepted at the customer’s risk. |
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