LS2035 Needle Roller Thrust Washer

LS2035 is a needle roller thrust washer. Its selection starts with the interface it contributes to the mechanism. The separately specified mating members, their seating and the intended contact condition determine how that interface works after assembly. Keep the component designation with its dimensional and condition data when comparing alternatives; a similar nominal size is not enough to establish a replacement.

Component Role and Mating Contact

LS2035 is a washer member for a rolling-element thrust arrangement. It provides a working face or support interface whose axial position and backing determine the relationship with the mating roller set. Neither the roller-and-cage subassembly nor an opposing washer is included by the washer designation. Its width or thickness contributes to the assembly stack without defining the total installed height.

The exact washer form must suit its shaft-side, housing-side or other intended interface. Bore and outside diameter control location and surrounding clearance, while face support affects the distribution of axial reaction. Do not substitute a visually similar washer without checking the mating assembly. A flat working face needs appropriate backing and alignment; nominal dimensions alone do not establish the surface condition required for rolling contact.

Dimensions That Define the Interfaces

The principal dimensional entries identify System of Measurement: Metric, Bore Dia: 20 mm, Outer Dia: 35 mm, and Width: 2.75 mm. Bore and outside diameter define washer location and surrounding clearance; width contributes to the thrust stack. Relate these dimensions to the mating roller set and the working face. A washer that clears the shaft still needs suitable backing across the intended contact region.

Interface limits include Bore Dia Tolerance: 0.04mm to 0.25mm and Outer Dia Tolerance: -0.440mm to -0.05mm. Use each limit for the dimension named. Component limits do not directly specify a shaft or housing machining tolerance. The required fit also depends on support stiffness, loading and temperature. Check the assembled geometry after seating rather than judging compatibility from one nominal dimension. Retain the signs and units of each limit instead of treating it as a symmetric tolerance.

Material Roles and Geometric Condition

The stated component entries are Material: Spring Steel. The material describes the washer member, not the mating rollers or cage. Backing stiffness, surface condition and the mating material must suit the axial contact. A material designation alone does not establish surface hardness, contact endurance or corrosion performance for the completed thrust arrangement.

Assess the contact condition using the specified geometry and the required mating surface condition. No unlisted grade or hardness should be assigned to the component. Surface condition and the mating material affect contact stress and wear. Relate these details to alignment, lubricant film and cleanliness without assigning an unlisted material treatment or operating capability.

Ratings and the Operating Arrangement

Evaluate capacity through the complete mating contact system rather than assigning a load limit to this component alone. The working surface must remain correctly supported and aligned, with contact conditions established by the mating design. Load, speed and lubricant film interact in the completed arrangement. The component designation and nominal size cannot replace that operating assessment.

Operating entries identify Temperature Range: -30° to 110 °C. Lubricant selection, delivery and heat removal depend on the complete duty. Provide a route to the working contacts and account for contamination and retention through the surrounding design. Do not assign an enclosure or a replenishment interval from the component designation.

Backing, Edge Clearance and Assembly

Back LS2035 with the flat, square supporting face required by the thrust arrangement. Local gaps, dirt or uneven clamping can change the working-face alignment and reaction distribution. Check radial location and edge clearance without relying on roller contact to locate a washer that requires support elsewhere. Its thickness belongs in the complete axial stack assessment.

After assembly, check seating, alignment, the intended freedom of motion and lubricant access before applying normal duty. Preserve the individual contact and backing relationships when evaluating runout, heating or wear. Do not route mounting force through rolling contacts simply because it is convenient, and do not infer an installation torque, fit class or preload force that has not been specified.

Selecting the Component as Part of a System

The selection of LS2035 should resolve the mating needle thrust assembly, working face and washer location. This is the component’s useful engineering context, not a machine-specific approval. Compare the exact designation and interface condition before considering an alternative. Material roles, tolerances and any operating entries must remain connected to the same ordered component rather than borrowed from another member of the arrangement.

For procurement and assembly planning, retain the part specification with the confirmed mating designations and the dimensional requirements of the mechanism. Check support, lubricant access and the intended operating duty as a connected system. The value of this component lies in providing its particular interface correctly; similar nomenclature, a shared series or a matching nominal size cannot establish whole-bearing performance or exact interchangeability.