Hdag OEM Car Accessories Pr21120-1006120 Pr21120-1006135 Pr21080-1006120 Auto Belt Tensioner Pulley for Lada Ba3 Vaz 2112 Gaz Uaz Kamaz Kalina Priora Oka Niva

What is a belt tensioner?The tensioner is a belt tensioning device belonging to the automobile transmission system. It is mainly composed of a fixed housing, a tensioning arm, a wheel body, a torsion spring, a rolling bearing and a spring sleeve. The belt tensioner is used to adjust the tightness of the belt, reduce the vibration of the belt during operation and prevent the belt from slipping to a certain extent, ensuring the normal and stable operation of the transmission system. It is generally replaced together with the belt, idler and other cooperative accessories. The belt is a wearing part in automobile parts. When the belt is used for a long time, it is prone to wear. When the groove of the belt is worn deep and narrow, it will appear to be stretched. At this time, a hydraulic unit or damping needs to be performed through a tensioner. Spring, and the tensioner wheel can automatically adjust according to the degree of wear of the belt. Therefore, the belt tensioner wheel installed on the car can make the belt run more smoothly, reduce noise and prevent slipping.The principle of belt tensioner:The belt tensioner requires a certain amount of torque to maintain the proper tension of the belt during use and avoid belt slippage and elongation caused by aging or wear. When the belt tensioner is running, the belt can cause vibration in the tensioner, which will accelerate the wear of the belt and the tensioner. Therefore, in order to avoid this situation, we need to add a resistance mechanism to the tensioner. However, because the belt tensioner is affected by different parameters, its relationship with torque and resistance is complicated. The change in torque directly affects the change in resistance, and is the main factor affecting resistance. The parameters of the torsion spring are also the main factor affecting torque. Therefore, in order to better improve the resistance value of the belt tensioner, it is necessary to appropriately reduce the pitch diameter of the torsion spring.The main function of the belt tensioner is to adjust the tightness of the timing belt, reduce the vibration of the belt during operation, prevent the belt from slipping and ensure the normal and stable operation of the transmission system. Although the belt tensioner pulley has powerful performance, its service life is short. Many car owners complain that the belt tensioner is broken before the belt is broken. When this happens, the timing belt and tensioner pulley should be replaced together. Therefore, HDAG tensioner suggest that under normal circumstances, the belt tensioner should be replaced every 3-5 years or about 80,000-100,000 kilometers. Please refer to the vehicle maintenance manual for the specific replacement time.Why choose our brand HDAG timing belt tensioner and pulley, because of our technical standard:1 The runout of the out shape rear rod machining and the positioning diameter is ≤0.15mm2 The appearance no allowed obvious bumps or scratches3The product is not allowed to rust4 threads to ensure that the go-gauge go-no-stop5. Internal and external spline span, major diameter and minor diameter meet the requirements of technical drawings6 Internal and external splines need to be used, and the spline ring plug gauge passes smoothly7 The static torsional strength of the rod is ≥2800N/m; it must be tempered after quenching8 CV JOINT rod hardness 55-58HRC9 The depth of the hardened layer at the rod part is 3.0-3.210 rod R angle hardened layer depth 1.8 mm11 Cavity hardness 58-62HRC12 Inner cavity hardened layer depth 1.5-1.8mm13 star sleeve surface hardness 58-62HRC14 star sleeve hardened layer depth 0.8-1.2mm15 cage surface hardness 58-62HRC16 cage hardened layer depth 0.7-0.9mm17 Cage window tightness is moderate18 six-groove roughness ≤ 0.8Ra19 The tightness of the assembly is moderate, no stagnation is allowed, and the diagonal and large and small circles are smoothProduct description HDAG oem car accessories PR21120-1006120 PR21120-1006135 PR21080-1006120 auto belt tensioner pulley for lada ba3 vaz 2112 gaz uaz kamaz Kalina Priora OKA niva    Item Name         Auto or car belt tensioner, timing belt tensioner, belt pulley, idler pulley,OEM/REF NO.             PR21120-1006120 PR21120-1006135 PR21080-1006120 ; MP406.1308080-28 740.51-1307220 740.11-1307220 740.11-1307220 ; 40624.1029010 5340.1308110.10 ; 21126-1006135 21126-6006238 531040930 531087610 21116-1006238 211261006135 211266006238 211161006238Car ModelFor lada ba3 vaz 2112 gaz uaz kamaz Kalina Priora OKA niva  MOQ50PCS/100PCS depend on car models and production detailsQuality/Product parametersOEM standard or Design as sample or drawingPayment TermsT/T, L/C, Credit card, CashProduct Guarantee1 Year or 50,000kmsDelivery Time1. Sample: within 7 days if with stock roughcast                                                                    2. Batch : 30-45 days since receive depositPackage1.Neutral bag+inner box+master carton                      2.Custom