{"product_id":"1621-zz-ball-bearing","title":"PGN 1621-ZZ Bearing - C0 Pre-Lubricated Chrome Steel Sealed Ball Bearing","description":"\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px dotted rgb(22, 51, 64); height: 166.719px;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 30.0537%; background-color: rgb(240, 240, 240);\"\u003e \u003ccol style=\"width: 20.0358%;\"\u003e \u003ccol style=\"width: 30.0537%; background-color: rgb(240, 240, 240);\"\u003e \u003ccol style=\"width: 19.8569%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1797px;\"\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eMODEL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e1621-ZZ\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eIN DIAMETER (BORE)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e0.5 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1797px;\"\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eTYPE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003eMetal Shield\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eOUT. DIAMETER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e1.375 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1797px;\"\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eMATERIAL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e100% Chrome Steel\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eRPM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e16,800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1797px;\"\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eCLEARANCE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003eC0 (Pre-Lubricated)\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\u003cstrong\u003eDYNAMIC LOAD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 39.1797px;\"\u003e\n\u003cspan data-sheets-root=\"1\"\u003e1326 \u003c\/span\u003elbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 10px;\"\u003e\u003cstrong\u003eWIDTH (THICKNESS)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 10px;\"\u003e0.4375 inch\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 10px;\"\u003e\u003cstrong\u003eSTATIC LOAD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px dotted rgb(22, 51, 64); text-align: center; vertical-align: middle; padding: 8px; height: 10px;\"\u003e\n\u003cspan data-sheets-root=\"1\"\u003e787 \u003c\/span\u003elbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdetails\u003e\n\u003csummary class=\"pgn_readmore\"\u003eRead More\u003c\/summary\u003e\n\u003ch1 data-section-id=\"xkkvx4\" data-start=\"4220\" data-end=\"4242\"\u003e1621-ZZ Ball Bearing\u003c\/h1\u003e\n\u003cp data-start=\"4244\" data-end=\"4457\"\u003eThe 1621-ZZ Ball Bearing is a deep groove ball bearing with double metal shields engineered for industrial applications requiring efficient rotation, low mechanical resistance, and dependable continuous operation.\u003c\/p\u003e\n\u003cp data-start=\"4459\" data-end=\"4902\"\u003eManufactured from chrome steel and supplied factory pre-lubricated, this model combines mechanical durability with stable performance in rotating equipment. The ZZ configuration uses metal shields on both sides of the bearing to help reduce light debris contamination while maintaining excellent high-speed capability. (\u003ca data-start=\"4779\" data-end=\"4901\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/pgnbearings.com\/products\/pgn-1621-zz-bearing-c0-pre-lubricated-chrome-steel-sealed-ball-bearing\"\u003epgnbearings.com\u003c\/a\u003e)\u003c\/p\u003e\n\u003ch2 data-section-id=\"x1byr6\" data-start=\"4904\" data-end=\"4939\"\u003eWhat is the 1621-ZZ Ball Bearing\u003c\/h2\u003e\n\u003cp data-start=\"4941\" data-end=\"5122\"\u003eThe 1621-ZZ belongs to the deep groove ball bearing category, one of the most widely used bearing types in industrial applications due to its versatility and operational efficiency.\u003c\/p\u003e\n\u003cp data-start=\"5124\" data-end=\"5526\"\u003eThe “ZZ” designation refers to double metal shields. This protection style helps reduce contamination from dust and light debris without creating the additional drag commonly associated with rubber seals. As a result, ZZ bearings are commonly used in higher RPM applications with lower moisture exposure. (\u003ca data-start=\"5430\" data-end=\"5525\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/www.skf.com\/us\/products\/rolling-bearings\/ball-bearings\/deep-groove-ball-bearings\"\u003eSKF\u003c\/a\u003e)\u003c\/p\u003e\n\u003ch2 data-section-id=\"1gcko7n\" data-start=\"5528\" data-end=\"5567\"\u003eApplications for the 1621-ZZ Bearing\u003c\/h2\u003e\n\u003cp data-start=\"5569\" data-end=\"5654\"\u003eThe 1621-ZZ can be used in a variety of industrial and mechanical systems, including:\u003c\/p\u003e\n\u003cul data-start=\"5656\" data-end=\"5807\"\u003e\n\u003cli data-section-id=\"16r9s0j\" data-start=\"5656\" data-end=\"5673\"\u003eElectric motors\u003c\/li\u003e\n\u003cli data-section-id=\"19jtimc\" data-start=\"5674\" data-end=\"5692\"\u003eIndustrial pumps\u003c\/li\u003e\n\u003cli data-section-id=\"h12asr\" data-start=\"5693\" data-end=\"5711\"\u003eFans and blowers\u003c\/li\u003e\n\u003cli data-section-id=\"1r3j60\" data-start=\"5712\" data-end=\"5727\"\u003eCNC machinery\u003c\/li\u003e\n\u003cli data-section-id=\"1eg8h2z\" data-start=\"5728\" data-end=\"5752\"\u003eAgricultural equipment\u003c\/li\u003e\n\u003cli data-section-id=\"mkli8s\" data-start=\"5753\" data-end=\"5766\"\u003ePower tools\u003c\/li\u003e\n\u003cli data-section-id=\"ks4s2z\" data-start=\"5767\" data-end=\"5785\"\u003eConveyor systems\u003c\/li\u003e\n\u003cli data-section-id=\"1c4o0gk\" data-start=\"5786\" data-end=\"5807\"\u003eAutomated equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"5809\" data-end=\"6000\"\u003eAdditionally, ZZ bearings are widely used in systems requiring high rotational speed and smooth operation. (\u003ca data-start=\"5917\" data-end=\"5999\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/www.nsk.com\/tools-resources\/abc-bearings\/deep-groove-ball-bearings\/\"\u003eNSK\u003c\/a\u003e)\u003c\/p\u003e\n\u003ch2 data-section-id=\"x04j0v\" data-start=\"6002\" data-end=\"6041\"\u003eBenefits of the 1621-ZZ Ball Bearing\u003c\/h2\u003e\n\u003ch3 data-section-id=\"bdk8u7\" data-start=\"6043\" data-end=\"6074\"\u003eLower rotational resistance\u003c\/h3\u003e\n\u003cp data-start=\"6076\" data-end=\"6161\"\u003eThe metal shields help maintain low operational friction for high-speed applications.\u003c\/p\u003e\n\u003ch3 data-section-id=\"unpf6f\" data-start=\"6163\" data-end=\"6198\"\u003eProtection against light debris\u003c\/h3\u003e\n\u003cp data-start=\"6200\" data-end=\"6278\"\u003eThe ZZ configuration helps reduce contamination from dust and small particles.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1sn1li6\" data-start=\"6280\" data-end=\"6300\"\u003eStable operation\u003c\/h3\u003e\n\u003cp data-start=\"6302\" data-end=\"6411\"\u003eDeep groove bearing design supports smooth rotation, reduced vibration, and efficient mechanical performance.\u003c\/p\u003e\n\u003ch3 data-section-id=\"ot1cz2\" data-start=\"6413\" data-end=\"6442\"\u003eChrome steel construction\u003c\/h3\u003e\n\u003cp data-start=\"6444\" data-end=\"6543\"\u003eChrome steel provides mechanical durability and dependable performance for industrial environments.\u003c\/p\u003e\n\u003ch2 data-section-id=\"uv4iyk\" data-start=\"6545\" data-end=\"6572\"\u003eWhen to Use a ZZ Bearing\u003c\/h2\u003e\n\u003cp data-start=\"6574\" data-end=\"6616\"\u003eZZ bearings are typically recommended for:\u003c\/p\u003e\n\u003cul data-start=\"6618\" data-end=\"6733\"\u003e\n\u003cli data-section-id=\"1co9ygp\" data-start=\"6618\" data-end=\"6645\"\u003eLow-moisture environments\u003c\/li\u003e\n\u003cli data-section-id=\"1l14qfr\" data-start=\"6646\" data-end=\"6671\"\u003eHigher RPM applications\u003c\/li\u003e\n\u003cli data-section-id=\"19nvz07\" data-start=\"6672\" data-end=\"6706\"\u003eSystems requiring lower friction\u003c\/li\u003e\n\u003cli data-section-id=\"v6oiw1\" data-start=\"6707\" data-end=\"6733\"\u003eContinuous-use equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"6735\" data-end=\"6853\"\u003eMeanwhile, 2RS bearings are generally preferred for wet environments or applications exposed to heavier contamination.\u003c\/p\u003e\n\u003ch2 data-section-id=\"ibh3nq\" data-start=\"6855\" data-end=\"6874\"\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cp data-start=\"6876\" data-end=\"6931\"\u003eTo maximize bearing service life, it is recommended to:\u003c\/p\u003e\n\u003cul data-start=\"6933\" data-end=\"7068\"\u003e\n\u003cli data-section-id=\"opeue1\" data-start=\"6933\" data-end=\"6956\"\u003eCheck shaft alignment\u003c\/li\u003e\n\u003cli data-section-id=\"1p54si3\" data-start=\"6957\" data-end=\"6987\"\u003eAvoid excessive impact loads\u003c\/li\u003e\n\u003cli data-section-id=\"1fbqfg5\" data-start=\"6988\" data-end=\"7019\"\u003eMonitor operating temperature\u003c\/li\u003e\n\u003cli data-section-id=\"192kt4g\" data-start=\"7020\" data-end=\"7044\"\u003eInspect abnormal noise\u003c\/li\u003e\n\u003cli data-section-id=\"1brtt2i\" data-start=\"7045\" data-end=\"7068\"\u003eKeep the system clean\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"7070\" data-end=\"7138\"\u003eThese practices help preserve performance and reduce premature wear.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1aamqce\" data-start=\"7140\" data-end=\"7168\"\u003ePGN Bearings Product Line\u003c\/h2\u003e\n\u003cp data-start=\"7170\" data-end=\"7444\"\u003ePGN Bearings supplies industrial components for rotating systems and mechanical applications. The product line includes ball bearings, roller chains, pillow block bearings, steel balls, and additional products designed for dependable performance and operational reliability.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1hryhf7\" data-start=\"7446\" data-end=\"7452\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1tm0got\" data-start=\"7454\" data-end=\"7489\"\u003eWhat does ZZ mean on a bearing?\u003c\/h3\u003e\n\u003cp data-start=\"7491\" data-end=\"7647\"\u003e“ZZ” indicates metal shields on both sides of the bearing. (\u003ca data-start=\"7551\" data-end=\"7646\" rel=\"noopener\" class=\"decorated-link\" href=\"https:\/\/www.skf.com\/us\/products\/rolling-bearings\/ball-bearings\/deep-groove-ball-bearings\"\u003eSKF\u003c\/a\u003e)\u003c\/p\u003e\n\u003ch3 data-section-id=\"1mqpc8k\" data-start=\"7649\" data-end=\"7705\"\u003eIs the 1621-ZZ suitable for high-speed applications?\u003c\/h3\u003e\n\u003cp data-start=\"7707\" data-end=\"7793\"\u003eYes. ZZ bearings typically provide lower friction and improved high-speed performance.\u003c\/p\u003e\n\u003ch3 data-section-id=\"op2ui7\" data-start=\"7795\" data-end=\"7837\"\u003eDoes this bearing come pre-lubricated?\u003c\/h3\u003e\n\u003cp data-start=\"7839\" data-end=\"7885\"\u003eYes. The bearing comes factory pre-lubricated.\u003c\/p\u003e\n\u003ch3 data-section-id=\"blp15e\" data-start=\"7887\" data-end=\"7942\"\u003eWhat is the difference between ZZ and 2RS bearings?\u003c\/h3\u003e\n\u003cp data-start=\"7944\" data-end=\"8075\"\u003eZZ bearings use metal shields for lower rotational resistance, while 2RS bearings use rubber seals for greater moisture protection.\u003c\/p\u003e\n\u003ch3 data-section-id=\"12bu2wp\" data-start=\"8077\" data-end=\"8124\"\u003eCan the 1621-ZZ be used in electric motors?\u003c\/h3\u003e\n\u003cp data-start=\"8126\" data-end=\"8210\"\u003eYes. This model is commonly used in motors, fans, and industrial rotating equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/details\u003e","brand":"PGN Bearings","offers":[{"title":"Default Title","offer_id":51936536822073,"sku":"BB-1621-ZZ\/1","price":1.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0038\/9342\/8337\/files\/1621-ZZ.png?v=1771012887","url":"https:\/\/pgnbearings.com\/products\/1621-zz-ball-bearing","provider":"PGN","version":"1.0","type":"link"}