- Model NO.: 21307
- The Number of Rows: Double
- Material: Bearing Steel
- Load Direction: Radial Bearing
- Structure Type: Spherical Roller Bearing
- Precision Rating: P0 P6 P5 P4 P2
- Cage Type: Ca Cc E MB
- Lubrication: Oil Lubrication
- Application: Automotive
- Trademark: HENGLI, LZ
- Specification: 35*80*21 mm
- HS Code: 84823000
- Rolling Body: Roller Bearings
- Outer Dimension: Medium and Large(120-190mm)
- Spherical: Aligning Bearings
- Separated: Unseparated
- Clearance: C0 C2 C3 C4 C5
- Vibration: Z1V1 Z2V2 Z3V3
- Hardness: HRC59-60
- Retainer: Ca/Cc/Cak/E/MB/K30
- Certification: ISO9001:2008
- Transport Package: Neutral Packing Bearing
- Origin: China
Industrial 21307 Self-Aligning Spherical Roller Bearing
                              Application
     Continuous Casting Machines                          Mechanical Fans and Blowers
     Gearbox and Pumps                                  Wind Turbines
     Material Handling                                     Marine Propulsion and Offshore Drilling
     Mining and Construction Equipment                      Pulp and Paper Processing Equipment
A spherical roller bearing is a rolling-element bearing that permits rotation with low friction, and permits angular misalignment.
Typically these bearings support a rotating shaft in the [bore] of the inner ring that may be misaligned in respect to the outer ring.Â
The misalignment is possible due to the spherical internal shape of the outer ring and spherical rollers.
Despite what their name may imply,Spherical roller bearings are not truly spherical in shape. The rolling elements of spherical
roller bearings are mainly cylindrical in shape,But have a profile that makes them appear like cylinders that have been slightlyover-inflated.
Spherical roller bearing used in countless industrial applications, where there are heavy loads, moderate speedsand possiblymisalignment.
21307 Spherical Roller Bearing
| Product Name | Spherical Roller Bearing |
| Precision Rating | P6, P0, P5, P4, P2 |
| Material | Bearing Steel  (GCr15) |
| Clearance | C0 C1 C2 C3 C4 C5 |
| Vibration & Noisy | Z1,Z2,Z3 V1,V2,V3 |
| Cage | Brass, Nylon, Steel |
| Seal | ZZ, 2RS |
| Features | High Precision, High Speed, Long Life, High Reliability, Low Noise , Reduce Friction |
| Certification | ISO 9001:2008 |
| Packing | 1.Neutral Packing Bearing  2.Industrial Packing  3.Commercial Packing Bearing  4.Customize |
| Delivery Time | 30 - 45 Days After The Order is Confirmed |
| Shippment | 1.By Sea  2.By Air  3.By Express |
| Website |
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| Model | Boundary Dimensions (mm) | Basic Load Rating (KN) | Mass | |||||
| d | D | B | C | Co | Kg | |||
| 21307 | 21307K | 21307W33 | 35 | 80 | 21 | 70.70 | 73.30 | 0.547 |
| 21308 | 21308K | 21308W33 | 40 | 90 | 23 | 87.60 | 92.00 | 0.751 |
| 21309 | 21309K | 21309W33 | 45 | 100 | 25 | 105.00 | 112.00 | 1.010 |
| 21310 | 21310K | 21310W33 | 50 | 110 | 27 | 121.00 | 129.00 | 1.300 |
| 21311 | 21311K | 21311W33 | 55 | 120 | 29 | 141.00 | 152.00 | 1.660 |
| 21312 | 21312K | 21312W33 | 60 | 130 | 31 | 165.00 | 175.00 | 1.990 |
| 21313 | 21313K | 21313W33 | 65 | 140 | 33 | 186.00 | 197.00 | 2.450 |
| 21314 | 21314K | 21314W33 | 70 | 150 | 35 | 206.00 | 223.00 | 2.980 |
| 21315 | 21315K | 21315W33 | 75 | 160 | 37 | 249.00 | 270.00 | 3.630 |
| 21316 | 21316K | 21316W33 | 80 | 170 | 39 | 272.00 | 306.00 | 4.290 |
| 21317 | 21317K | 21317W33 | 85 | 180 | 41 | 297.00 | 351.00 | 5.190 |
| 21318 | 21318K | 21318W33 | 90 | 190 | 43 | 320.00 | 387.00 | 6.090 |
| 21319 | 21319K | 21319W33 | 95 | 200 | 45 | 366.00 | 500.00 | 7.150 |
| 21320 | 21320K | 21320W33 | 100 | 215 | 47 | 397.00 | 546.00 | 8.810 |
| 21322 | 21322K | 21322W33 | 110 | 240 | 50 | 460.00 | 634.00 | 9.460 |
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                                   About Us
HENGLI Machinery Company is a well-established Chinese bearing supplier. We design, manufacture and wholesale bearings.
Our specialized manufacturer of Spherical Roller Bearing & Cylindrical Roller Bearing, LUAN Rolling Bearing Co., Ltd was established in 1970 and is accredited by the Chinese Ministry of Machine Building.
We invested in two additional specialized bearing factories, which allow us to provide our clients with top of the line products such as Needle Roller Bearings, Spherical Plain Bearings, Rod Ends Bearings, Ball Joint Bearings, Tapered Roller Bearings,Wheel Hub Bearings and Non-Standard Bearings.
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Q1 - What is our advantages?
   A   - Manufacturer - Do it only with the Best;
      -Your Choice make different.Â
Q2 - Our Products
 A  - Spherical Roller Bearing, Cylindrical Roller Bearing, Needle Roller Bearing, Cam Followers, Thrust Bearing
   - Spherical Plain Bearing, Rod End, Ball Joint, Wheel Hub, Tapered Roller Bearing
Q3 - Process of our production
 A - Heat Treatment - Grinding - Parts Inspection - Assembly - Final Inspection - Packing
Q4 - How to customize bearing(non-standard) from your company?
 A -We offer OEM,Customized(Non-standard) service and you need to provide drawing and detailed Technical Data.
Q5 -Â Â What should I care before installation?
 A  - Normally, the preservative with which new bearings are coated before leaving the factory does not need to be
    removed; it is only necessary to wipe off the outside cylinÂdrical surface and bore, if the grease is not compatible
    with the preservative, it is necessary to wash and carefully dry the bearing.
    -Bearings should be installed in a dry, dust-free room away from metal working or other machines producing
    swarf and dust.
Q6 - How to stock and maintenance my bearings right?Â
 A  - Do not store bearings directly on concrete floors, where water can condense and collect on the bearing;
   -Store the bearings on a pallet or shelf, in an area where the bearings will not be subjected to high humidity
    or sudden and severe temperature changes that may result in condensation forming;
    -Always put oiled paper or, if not available, plastic sheets between rollers and cup races of tapered roller bearings.
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