Tsubaki Drive Chains - Tsubakimoto Chain - #151

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150 Selecting a Roller Chain Before Use For Safe Use Standard Roller Chains Lube-Free Roller Chains Heavy Duty Roller Chains Corrosion Resistant Roller Chains Specialty Roller Chains Accessories Selection Handling Pinion gear Wheel Pin gear sprocket Attachment chain Attachment chain Pin gear sprocket �œ Use standard roller chain. �œ Used an attachment roller chain. K1 attachment every 2nd link SK1 attachment every 2nd link 10. Pin gear drive selection method Generally, linear movement or large radius rotation is made possible by a roller chain and gear through a transmission source (motor, etc.) via a reducer. A roller chain, however, needs a lot of space, and gears requires precision machining, which increases the cost. A pin gear is ideal in these situations. Roller chain Gear Pin gear (Linear) Pin gear (Rotary) For pin gear drives, a roller chain is wrapped around the perimeter of the drum to make a wheel, and special sprockets (see Sprockets) are used instead of pinion gears. For linear motion, a roller chain is attached and used linearly instead of a rack. Item Pin gear drive Roller chain transmission Gear transmission Restrictions on distance between shafts Yes No Yes Number of engaged teeth Low High Low Speed ratio range No limit Up to 1:7 No limit Tooth shape Special teeth Sprocket teeth Involute Engagement accuracy Normal Normal Precise Economical at large speed ratios (1:5 or larger), especially when the drum has a large diameter. Roller chain attachments are bolted onto the drum for easy installation and maintenance. Design freedom in drum diameter, linear length, etc. Rough installation accuracy and no precision machining required for gears. Grease lubrication can be used. A pin gear is not suitable for ultra precise drives, and the noise level is high compared to gears. 1) 2) 3) 4) 5) 10.2 Chain installation and precautions 10.1 Characteristics of pin gears 1) When used linearly (rack) with rollers facing up: Connecting links are used on both ends, and fittings are attached and bolts and nuts are fastened to remove any slack. (Both ends need to be secured snugly with double nuts.) NOTE: This is not recommended as tooth slipping and interference can occur. Attach K1 or SK1 attachments every 2nd link and fasten with bolts and nuts every 2nd or 4th link with chain pulled taut so there is no slack or meandering. (K attachments are recommended.) The attachment holes are usually processed on-site.