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Koyo NTA-411 Needle Roller and Cage Thrust Assembly, Open, Steel

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Koyo NTA-411 Needle Roller and Cage Thrust Assembly, Open, Steel

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Product description

This Koyo thrust needle roller and cage assembly has a steel cage and is suitable for applications with high dynamic axial loads. It has a smaller cross-section than a standard thrust bearing for use in restricted spaces. The cage provides guidance and even spacing of the rollers for reduced friction, vibration, and noise when operated at high speeds, and it is made of hardened steel for greater strength, rigidity, and heat resistance than nylon cages. The needle rollers are made of through-hardened, high-carbon chromium steel for durability and heat tolerance under heavy loads, and have contoured ends to optimize the distribution of contact stress. This thrust needle roller and cage assembly meets American National Standards Institute/American Bearing Manufacturers Association standard ANSI/ABMA 21.2 for quality assurance, and is used in various applications, such as automotive and truck transmissions, agricultural and construction equipment, pumps and compressors, and two-cycle engines, among others.

Roller bearings use rolling elements to maintain a separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. Roller bearings can be open on both ends (a shaft can pass through) or open on one end and closed on the other. An open end can be sealed or shielded to protect the bearing from solid contaminants and moisture that could reduce its lifespan. If an end is sealed, the sealing component is an elastomer lip that contacts the shaft. If it is shielded, the shielding is a non-contact lip, usually made of metal. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others.

Koyo Bearings USA manufactures needle roller bearings, bearing assemblies, and needle rollers for automotive and industrial applications. The company, founded in 2009, is headquartered in Canton, OH, and meets International Organization for Standardization (ISO) standards 14001 and TS 16949 for quality assurance.

Koyo NTA-411 Needle Roller and Cage Thrust Assembly, Open, Steel

CURRENT ISSUE
September, 2021

No. 106 (9)

2020 Impact Factor: 9.941 Submission > Acceptance: 52 days
ARTICLES IN THREE SENTENCES
Article

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This open-label, single-arm study investigated the long-term efficacy of tafasitamab plus lenalidomide in 81 patients with relapsed/refractory diffuse large B-cell lymphoma. The response rate was 57.5%, including complete responses in 40.0% of patients, and the median duration of response was 43.9 months. This treatment is a valuable option for patients not eligible for autologous stem-cell transplantation.

Johannes Duell et al.

Case Report

Clinical genomic profiling of novel grey zone lymphoma paired lesions with sequential central nervous system involvement in two adolescent patients

Grey zone lymphoma is a B-cell lymphoma, unclassifiable, with features intermediate between those of large B-cell lymphoma and classic Hodgkin lymphoma. The in-depth study of the two adolescent patients described in this case report expands the clinicopathological and genomic spectrum of this rare pediatric disease. Moreover, it provides information on their response to treatment.

Cagla Y. Benkli et al.

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CAMT-MPL: congenital amegakaryocytic thrombocytopenia caused by MPL mutations - heterogeneity of a monogenic disorder - a comprehensive analysis of 56 patients

The clinical picture of 56 patients with congenital amegakaryocytic thrombocytopenia due to MPL mutations was much more varied than previously thought. Twenty-five per cent of them had no signs of thrombocytopenia at birth, and 50% had non-hematologic defects. Pancytopenia developed in (nearly) all patients and hematopoietic stem-cell transplantation was effective in 87% of cases.

Manuela Germeshausen et al.

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Oxidative stress activates red cell adhesion to laminin in sickle cell disease

Sickle red blood cells exhibit abnormal adhesion to laminin mediated by Lu/BCAM protein at their surface. This study provides evidence of the involvement of oxidative stress in post-translational modifications of Lu/BCAM which impact the protein’s distribution and cis-interaction with glycophorin C at the cell surface activating its adhesive function in dense sickle red cells. The authors speculate that antioxidant drugs might attenuate this phenomenon.

Maria Alejandra Lizarralde-Iragorri et al.

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