Zonglan Hand Tools for eyelets consist of piercing and attaching hand toolsets. Eyelet Dies,Grommet Machine Dies,Eyelet Flaring Die,Eyelet Press Dies NINGBO ZONGLAN MECHANICAL AND ELECTRICAL EQUIPMENT MANUFACTURE CO., LTD , https://www.zonglaneyelet.com TIMKEN® Roll Neck Bearing (3): Protection
**Roller Neck Bearing Protection**
Roller neck bearings require regular inspection and maintenance to ensure optimal performance and extend their service life. The frequency of these checks should be adjusted based on the mill’s operating conditions. Typically, full-load mills are inspected every three months, while most mills are checked every six months, and light-duty mills every twelve months.
After the initial 1000 hours of operation, it is important to inspect the bearings more closely. During each inspection, the bearing should be fully removed from the mill, and the oil seal should be examined. If necessary, the oil seal should be replaced. If no issues are found, the next inspection can be extended, such as after 2000 hours or more. Each time a bearing is removed, its orientation and position within the mill should be recorded for future reference.
### 1. Standard Process for Roller Neck Bearing Maintenance:
1) **Track and Record Orientation**:
It's essential to track the bearing's position in the mill. TIMKEN provides a protection service card that allows users to record details like the housing number, roll number, rack number, bearing orientation, and operational data. This card should be updated regularly for easy access by maintenance staff.
2) **Remove the Bearing**:
Special lifting tools and methods are required when removing the bearing from the housing. TIMKEN can supply the necessary equipment to ensure safe handling.
3) **Clean the Bearing**:
All contaminants, including dirt, water, and residual lubricants, must be removed. For small bearings, solvents like fire oil or mineral oil can be used. For larger bearings, neutral oil with a viscosity of 22 cSt (or 100 SUS at 100°F) is recommended.
4) **Inspect the Bearing**:
Check the outer surface for signs of wear, such as cracks or peeling. Minor damage can be sanded down, but severe issues may require replacement.
5) **Measure Clearance**:
Regularly check the bearing clearance to assess wear and determine if further action is needed.
6) **Inspect the Housing**:
Ensure the bearing housing is free from damage and suitable for reinstallation.
7) **Reinstall the Bearing**:
Carefully place the bearing back into the housing and ensure proper alignment.
8) **Check the Roll Neck**:
Inspect the roll neck for any damage or wear that could affect the bearing’s performance.
9) **Reassemble the Unit**:
Place the bearing housing back onto the roll and secure it properly.
### 2. Lubrication of Roll Neck Bearings:
1) **Recommended Grease Characteristics**:
- Base: Lithium complex, calcium sulfonate, composite aluminum, or equivalent
- Consistency: NLGI No. 1 or 2
- Additives: Preservatives, antioxidants, and EP additives (ASTM D2509)
- Base Oil: Solvent-based mineral oil or synthetic oil with viscosity between 320–460 cSt
- Viscosity Index: Minimum 80
- Pour Point: -10°C
2) **Recommended Greases**:
- TIMKEN Premium Mill Grease
- Mobil Mobilith SHC 460
- Fina Ceran HV
3) **Grease Filling Amount**:
Fill the bearing and housing to about two-thirds or one-third of the space. After each grinding cycle, refill with 1/5 of the initial amount. The replenishment interval depends on factors like bearing layout, speed, temperature, and environment.
4) **New Bearings**:
Do not remove the anti-rust grease from new bearings. Although it is not a lubricant, it does not interfere with normal operation.
### 3. Storage and Handling of Roll Neck Bearings:
1) **Packaging**:
Keep inner and outer rings wrapped in plastic to protect against moisture and dust.
2) **Storage Position**:
Store bearings horizontally to prevent deformation. Use original packaging and store them in a dry, clean area.
3) **Environmental Conditions**:
Avoid storing bearings in dusty or humid environments unless they are sealed. Never place them directly on pallets or open shelves.
4) **Installation Environment**:
Ensure the installation area is clean and free from debris. Avoid installing near welding or machining areas to prevent contamination.
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This manual set is designed to be used with a hide face mallet. It is good for piercing material and attaching curtain eyelets afterward. Not all hand tools are the same and it is not easy to find such a highly qualified hand tool for attaching curtain eyelets in today`s world.
Though these tools are designed for low-volume eyelet application projects, Zonglan Hand Tools are professionally designed and produced with advanced technology for decades of problem-free use. Zonglan Hand Tools are made of Stainless Steel to increase their resistance to oxidation. Their surface is specially treated for metal hardening for stronger durability against harsh hammer usage.
Zonglan Hand Tools are designed in such a manner affording the use of minimum force with maximum comfort. In addition, thanks to its precision, the eyelet application quality of Zonglan Hand Tools is far better than the application quality of its ordinary competitors.
Our hand tools sets are available for 6mm,10mm and 12mm Easy Apply Zonglan eyelets and are suitable to attach them onto various substrates, including tarpaulin, drapery and home textile.
**TIMKEN® Roll Neck Bearing (3): Protection**
Home > Bearing Knowledge > TIMKEN® Roll Neck Bearing (3): Protection
*Created on 2018/5/16*
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Source: Bearing Network | Date: June 2, 2013