Sealmaster Mounted Insert Only Ball Bearing - 52100 Bearing Steel, Black Oxided - Concentric Lock - ER-31TC
Part #:705963
Catalog #:ER-31TC
KEY FEATURES
- ER style cylindrical OD bearing with snap and with black oxided bearing rings
- Skwezloc® concentric locking for near perfect concentricity
- Felt labyrinth seal and flinger for dry and dusty environment
- Unique land riding retainer design provides superior pocket clearance that allows for 360° grease circulation around the rolling elements resulting in better retained and utilized lubrication.
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Product Specifications
Dimensions
| Overall Width (in): | 2.09 in | Bore Size (in): | 1.9375 in |
| Outer Race Width (in): | 1.125 in | Outer Race OD (in): | 3.5433 in |
| Centerline to Front Face (in): | 1.344 in | Collar OD (in): | 3.47 in |
| Inner Ring OD (in): | 2.469 in | Outer Race OD (mm): | 90 mm |
| Length Through Bore (in): | 2.09 in | Outer Race Width (mm): | 28.6 mm |
Technical Specifications
| Rolling Element: | Ball Bearing | Measure Units: | Inch |
| Bore Shape: | Straight | Housing Type: | Insert (ER Style) |
| Torx Cap Screw: | 5/16-18 UNC | Insert Material: | 52100 Bearing Steel |
| Seal Type: | Single Lip Contact Seal | Expansion: | No |
| Internal Clearance: | Standard | Misalignment: | None |
| Bearing Insert Coating: | Black Oxide | End Cap: | No |
| Platform: | Gold Line Ball Bearing | Outer Ring Land Profile: | Tapered Lands |
| Misalignment Type: | Static Only | Precision Rating: | ABEC 1 |
| Cage Material: | PPS - Polyphenylene Sulfide | Inner Race Profile: | Wide Inner Ring |
| Outer Race Profile: | Cylindrical | Vibration Frequency Fundamental Train: | 0.0068 cps |
| Maximum Speed (rpm): | 3550 rpm | Series: | Unmounted Replacement Bearings |
| Size Code: | 2-115 | Setscrew Torque (in-lbs): | 495 in/lbs |
| Inner Ring Fillet Radius (in): | 0.06 in | Locking Type: | Concentric |
| Inner Race Heat Treat Method: | Zone-Hardened | Ability to Relubricate: | Yes |
| Vibration Frequency Roller Spin: | 0.0445 cps | Maximum Operating Temperature (F): | 220 °F |
| Lubrication Type: | Lithium Complex NLGI 2 Grease | Duty/Status: | Standard |
| Vibration Frequency Inner Ring Defect: | 0.0984 cps | Vibration Frequency Outer Ring Defect: | 0.0683 cps |
| Dynamic Load Rating (lb): | 7,889 lb | Static Load Rating (lb): | 5,216 lb |
| Cage Type: | Land Riding Retainer |
General Specifications
| UPC: | 662461034262 | Weight: | 2.90 LB |
| Packaged Length: | 4.25 IN | Packaged Width: | 2.25 IN |
| Packaged Height: | 4.25 IN | HTC: | 8482.10.5052 |
| Country of Origin: | Mexico |

