Product Description
BEARING
Frequently Asked Questions
Q: What is the YL 512709800 bearing and where is it used?
A: The YL 512709800 is a mechanical bearing used in Yale lift truck mast assemblies, motors, or load-wheel systems. It supports rotating shafts and reduces friction between moving components to enable smooth operation and load distribution.
Q: Which Yale lift trucks use this bearing?
A: This bearing fits multiple Yale electric pallet jack and walkie stacker models with mast or motor assemblies. Exact application varies by model year and configuration. Verify bore diameter, outer diameter, and width match your equipment before ordering.
Q: What are the bearing specifications and material properties?
A: The YL 512709800 is a ball or roller bearing made from hardened steel races with precision-grade balls or rollers. It is designed to handle radial and axial loads typical of lift truck duty cycles. Lubrication is sealed or requires periodic grease depending on bearing type.
Q: What symptoms indicate a bearing has failed?
A: Failed bearings cause grinding or rattling noise, shaft wobble or vibration, excessive play in mast movement, resistance to rotation, or resistance to lift cycles. Overheating of the bearing housing can also indicate failure.
Q: How long do these bearings last and what affects lifespan?
A: Under normal conditions, bearings typically last 5-10 years. Lifespan is reduced by improper lubrication, contamination, overloads, and wet or corrosive environments. Preventive relubrication extends service life. Bearings cannot be repaired and must be replaced once worn or damaged.
Q: Is this bearing sealed or does it require maintenance?
A: The YL 512709800 may be sealed or open depending on application. Sealed bearings require no maintenance. Open bearings need periodic greasing according to your equipment manual. Verify your specific bearing configuration before ordering or servicing.