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Rolling contact bearing are an essential component in many mechanical systems. They are commonly used to accommodate both radial and axial loads, enabling rotary motion between two objects. Over time, bearings may become worn, leading to reduced efficiency, damage and possible failure of equipment.
| Deep Groove Ball Bearings | |
| Brand Name | DERUNA |
| Model Number | 6206 |
| Place of Origin | China |
| Precision Rating | P0 P6 P5 P4 P2 |
| Seals Type | ZZ 2RS |
| Product name | DERUNA bearing |
| Application | Automotive.tractor.construction Machinery.rolling Mill |
| Material | Chrome Steel/GCr15 Stainless Steel |
| Feature | Long Life |
| Service | OEM Customized Services |
| Package | Original package |
| Sample | Availabe |
| Self-aligning Ball Bearing | |
| Brand Name | DERUNA |
| Place of Origin | China |
| Precision Rating | P0 P6 P5 P4 P2 |
| Product name | DERUNA bearing |
| Application | precision instruments, low noise motors, automobiles, motorcycles and general machinery, etc. |
| Material | Chrome Steel/GCr15 Stainless Steel |
| Feature | Long Life |
| Service | OEM Customized Services |
| Package | Original package |
| Sample | Availabe |
| Cylindrical Roller Bearings | |
| Bearing Materials | GCr15,GCr15SiMn,G20Cr2Ni4A etc. or Customerized |
| Cage | Steel Cage,Cooper Cage |
| Quality certificate | ISO9001:2000 |
| Feature | Low Noise, Low Vibration, High Precision, Long Life |
| Size | ID 100MM – OD 2000MM |
| Brand | DERUNA |
| Tolerance Standard | ISO492, ANSI B3.14, DIN 620/2, GB307, SB/T53419-94, SB/CO/T10-89 etc. |
| Precision Grade | ABEC(1,3,5,7,9),P0,P6,P5,P4,P2 and Equal Level |
| Application | Metallurgical Machine, Paper Making Machine, Petrochemical,Mahine, Mining Machine, Gearing Machine, Cement, Etc. |
| Feature | Long Life |
| Service | OEM Customized Services |
| Package | Original package |
| Sample | Availabe |
| Spherical Roller Bearing | |
| Model | CA CAK CC CCK ME MA spherical roller bearings |
| Material | Chrome Steel, GCR15 |
| Type | Double Row |
| Size | d:3-150mm,D:9-225mm |
| Grade | P6,P5,P4 |
| Cage | Steel Cage,Cooper Cage |
| Used For | Paper machine, deceleration device, railway vehicle axle, rolling mill gearbox seat, rolling mill roller track, crusher, vibrating,screen, printing machine, woodworking machinery,screen, printing machine, woodworking machinery |
| Warranty | 1 year |
| Brand | OEM or HFZZ |
| Packing | According to the buyer requests for packaging |
| Angular Contact Ball Bearing | |
| Brand | DERUNA |
| Quality Standard: | ISO9001:2008 |
| Bearing No. | 25TAC 47B |
| Precision: | P0, P2, P4, P5, P6 |
| Vibration Level: | V1, V2, V3, V4 |
| Clearance: | C2, C3, C4, C5 |
| Hardness: | 59-63 HRC |
| Seal Types | Open or Sealed |
| Material: | Gcr15, Gcr15SiMn, Chrome steel, ceramic, stainless steel |
| Cage material | Steel cage, bakelite, nylon, brass, PEEK |
| Application | Angular Contact Ball Bearing are widely used in Machine tool spindles, high frequency motors, gas turbines, centrifugal separator, small car front wheels, differential pinion shaft, roots blowers, air compressors, transmissions, printing machine motors, water pump, oil pump, cutting machines, reducers, prospecting machines, polishing machines, diesel engines, textile machinery, steel mills etc. |
| Tapered Roller Bearings | |
| Type | ROLLER-Taper Roller Bearing |
| Model Number | 30207 33106 33107 33108 33109 33110J2/Q |
| Structure | Taper |
| Material | Chrome Steel |
| Retainer | Stamping Steel Plate |
| Applicable Industries | Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Printing Shops, Construction works , Energy & Mining etc.. |
| Bore Size | 50-75 mm |
| Precision Rating | P0 P6 P5 P4 P2 |
| Seals Type | OPEN |
| Number of Row | Single & Double & Four Row |
| Shape | Round |
| Customizable | Yes |
| Thrust Ball Bearings | |
| Material | Chrome steel or Ceramic as customer required |
| Delivery Time | 7-35days |
| Trade terms | T/T, L/C, Western Union, Paypal |
| Market | Global, but Asia, North America, South America, Middle East, Part of Europe are our main markets presently. |
| Packing | According to the buyer requests for packaging |
| Applicable Industries | Machinery Repair Shops, Printing Shops, Construction works , Energy & Mining |
| Spherical Trust Roller Bearing | |
| Model | 29436 29436 E |
| Material | Chrome Steel, GCR15 |
| Type | Double Row |
| Size | 180x360x109 mm |
| Grade | PO,P6,P5,P4,P2 |
| Cage | Steel Cage,Cooper Cage |
| Used For | Paper machine, deceleration device, railway vehicle axle, rolling mill gearbox seat, rolling mill roller track, crusher, vibrating,screen, printing machine, woodworking machinery. |
| Warranty | 1 year |
| Brand | OEM or HFZZ |
| Packing | According to the buyer requests for packaging |
| pillow block bearing | |
| Brand | Follow Customer’s Request |
| Model number | ucp208-24 |
| Material | Chrome Steel/GCr15 |
| Number of row | Single Row |
| Precision | P0 P6 P5 P4 P2 |
| STOCK | Great Supplying Ability |
| Warranty | 50000km or One year |
| Precision rating | ABCE-1 ABCE-3 ABCE-5 ABCE-7 |
| Vibration | V1 V2 V3 V4 |
| Clearance | C0 C2 C3 C4 C5 |
| Delivery Detail | 2-5 days upon receipt of deposit or according to your requirements |
| Shipping | Express ,AIR ,Sea Shipping |
| Needle Roller Bearing | |
| Model | oem |
| Material | Chrome Steel, GCR15 |
| Size | 40*65*22mm |
| Precision | PO,P6,P5,P4,P2 |
| Cage | Steel Cage,copper Cage,nylon Cage |
| Used For | Gearboxes of machine tools, Automobiles, Motorcycles, Textile machinery, printing machinery, |
| forage machinery, agricultural machinery, numerical control equipment | |
| Warranty | 1 year |
| Brand | OEM |
| Packing | According to the buyer requests for packaging |
| Shipping: | Express: DHL Fedex EMS /By Sea |
| Bearing Advantage: | 1).Excellent and high quality control |
| 2).Prompt delivery | |
| 3).Competitive price | |
| 4).Small order accepted | |
| 5).Customers’ drawing or samples accepted | |
| 6).OEM service | |
One of the most straightforward methods of determining whether a rolling contact bearing is worn is to simply examine it. This can be done during regular maintenance or when troubleshooting equipment. A visual inspection may reveal signs of wear such as discoloration, pitting, spalling, or localized abrasion. These signs can point to either overload, inadequate lubrication, or an excessive amount of contaminants in the bearing.
More sophisticated methods for determining the level of wear on a bearing involve testing the bearing for clearance and vibration analysis. One of the most popular and straightforward methods is to use a dial indicator. A dial indicator can be used to measure the radial clearance of the bearing. An increase in clearance is an indicator of wear. Vibration analysis will also provide information about the level of wear. This involves analyzing the vibration frequency of the bearing for changes in pitch and intensity.
There are many types of wear that can occur in a rolling contact bearing. Here are a few of the most common types of wear:
Determining whether a rolling contact bearing is worn can be done through a visual inspection or more sophisticated testing methods. Understanding the types of wear and how to prevent it can help to extend the lifespan of equipment and avoid unplanned downtime. Proper installation, adequate lubrication, and regular maintenance are key to preventing premature wear of bearings.
We are one of the largest suppliers of bearings in China. Providing the same products at the best price is the long term motivation and driving force for our business development. Contact us today to learn more about our products and services.