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Hard chrome pump wear surfaces

Hard Chrome Plated Pump Sleeves and Collars According to Drawings or Samples

Machining and hard chrome plating support for pump sleeves, collars and bearing-related wear surfaces where drawings define plating thickness, hardness, grinding, runout and surface finish.

  • Hard chrome plating
  • Sleeves / collars
  • Drawing-based

Application and function

Hard chrome plated pump sleeves and collars are reviewed as drawing-defined wear-surface components. RF Machining confirms base material, machining allowance, masking areas, post-plating dimensions, hardness, roughness and inspection requirements before quotation.

Applications

  • Pump shaft sleeves
  • Pump sleeve collars
  • Bearing-related pump sleeves
  • LPG pump sleeves and collars when specified by drawing
  • Canned motor pump sleeve components when specified by drawing
  • Sealless or magnetic drive pump wear-surface components
  • Rotating equipment wear surfaces

Common names

  • Hard chrome plated pump sleeve
  • Chrome plated pump collar
  • Hard chrome bearing sleeve
  • Precision ground pump sleeve
  • Chrome plated wear sleeve

Common materials

  • 304 / 316L
  • 2Cr13 / 20Cr13
  • 3Cr13 / 30Cr13
  • 42CrMo / alloy steel
  • Carbon steel when specified
  • Customer-specified materials

Buyer concerns

  • Plating thickness
  • Post-plating OD and fit
  • Hardness requirement
  • Surface roughness after grinding
  • Runout and concentricity
  • Masking or localized plating areas
  • Base material compatibility

In-house machining

  • CNC turning
  • Drilling and tapping
  • Thread machining
  • ID and OD machining
  • Face and groove machining
  • Stellite / cobalt-based alloy hardfacing when specified

Partner processes

  • Grinding
  • Hard Chrome Plating
  • Heat Treatment
  • Nitriding / QPQ
  • Thermal Spray Coating

Key inspection items

  • ID
  • OD
  • Length
  • Runout
  • Concentricity when specified
  • Roundness when specified
  • Surface roughness
  • Hardness when required
  • Hard chrome thickness when required
  • Masking and plated-area location

Documents available upon request

  • Material certificate upon request
  • First article report upon request
  • Key-dimension inspection record
  • Surface-treatment record when applicable
  • Packing photos upon request

RFQ details to include

  • Drawing or sample photos
  • Base material and quantity
  • Hard chrome thickness and hardness requirements
  • Pre-plating and post-plating dimensions
  • Grinding, roughness and runout requirements
  • Masking or localized plating areas

Buyer FAQs

Can RF Machining supply hard chrome plated pump sleeves?

Yes. RF Machining machines the sleeve or collar and can arrange hard chrome plating and grinding through long-term process partners when the drawing defines thickness, hardness, finish and inspection requirements.

Can Stellite hardfacing be used instead of hard chrome?

Stellite / cobalt-based alloy hardfacing is an in-house capability that can be reviewed when the drawing specifies the overlay area, base material, machining allowance and inspection requirements. The suitable surface system must be defined by the customer's design or RFQ.

Do you interpret coating abbreviations from a drawing?

RF Machining avoids guessing coating abbreviations. If a drawing uses an abbreviation, please provide the coating specification, thickness, hardness and finish requirement so the process route can be reviewed correctly.

Request for quotation

Send drawings or sample information

Send your drawing or sample information together with material, quantity, surface-treatment and inspection requirements. Our team will review the request and reply as soon as possible.

Upload Drawing for Quote

RFQ details to include

  • Drawing or sample information
  • Material requirements
  • Order quantity
  • Surface-treatment requirements
  • Inspection requirements
  • Target delivery timing