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Spacers, Standoffs & Binding Hardware › Spacers, Bushings & Distance Sleeves

Precise Bearing Spacer Ring for Rock Wool Centrifuges

Updated 2026-11-04 · Markdown version

US$58.801–9 pieces

US$56.4010+ pieces

MOQ 1 piece · Final price confirmed in your quote

Standard: China GB Code, Cast Steel / Forged Steel / Stainless Steel / High
Surface Treatment: Polishing, Passivation, etc.
Material: Steel, Alloy, Stainless Steel
Color: Customizable
Commonly Used Materials: Alloy Steel, Stainless Steel, etc.
Maximum Customizable Temperature Resista: 300℃
Premium and stable base material: 42CrMo forgings undergo quenching and tempering plus stress relief treatment, featuring dense metallographic structure without sand holes or air pores and minimal deformation under high temperatures.
Equipment Upgrade & Retrofit: Upgrade conventional cast iron spacers to wear-resistant alloy steel versions to resolve frequent abrasion failures of roller heads.

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Application	Machinery Accessory
Standard	China GB Code, Cast Steel / Forged Steel / Stainless Steel / High
Surface Treatment	Polishing, Passivation, etc.
Production Type	Single Production
Machining Method	CNC Machining
Material	Steel, Alloy, Stainless Steel
Color	Customizable
Technical Support Provided	Provide Technical Support and Spare Parts Supply
Process Flow	CNC Machining
Commonly Used Materials	Alloy Steel, Stainless Steel, etc.
Maximum Customizable Temperature Resista	300℃
Classification	Matched Sets of Inner Spacer Sleeves and Outer SPA
Thickness	Custom Thickness Available From 10 to 80 mm
Transport Package	Ocean Shipping, Air, Wooden Box Packaging
Specification	Customizable
Origin	Taian
HS Code	7326901990
Premium and stable base material	42CrMo forgings undergo quenching and tempering plus stress relief treatment, featuring dense metallographic structure without sand holes or air pores and minimal deformation under high temperatures.
Precision machining across all processes	finish turning of inner and outer circles as well as surface grinding on both end faces; parallelism, perpendicularity and dimensional tolerances are strictly controlled to make it a precision-grade component.
Excellent dimensional stability at high temperature	internal stress is eliminated via heat treatment, resulting in negligible dimensional variation under long-term working conditions around 200℃.
Matched inner and outer ring sets	inner and outer spacer rings are delivered in matched pairs with ultra-small pairing errors within the same group, eliminating the need for selective fitting during equipment assembly.
Wide versatility	standard specifications fit most mainstream domestic and imported rock wool fiberizing centrifuges.
Core Application	Assembly of bearing assemblies at the roller head end of centrifuges for rock wool, slag wool and glass wool production lines.
Equipment Maintenance & Replacement	Overhaul of centrifuge roller heads, replacement of damaged bearings and renewal of wearing parts on ageing equipment.
Equipment Upgrade & Retrofit	Upgrade conventional cast iron spacers to wear-resistant alloy steel versions to resolve frequent abrasion failures of roller heads.
Domestication of Imported Equipment	Substitution of original factory roller head spacer components for European, American and Japanese centrifuges.
Extended Application on Similar Equipment	Positioning wear-resistant spacers for high-speed discharge roller shafts of analogous equipment in fiberglass and thermal insulation wool industries.
Category	Spacers, Bushings & Distance Sleeves

Description

Precise Bearing Spacer Ring for Rock Wool Centrifuges is part of our spacers, bushings & distance sleeves range (Spacers, Standoffs & Binding Hardware).

Key details

Standard: China GB Code, Cast Steel / Forged Steel / Stainless Steel / High
Material: Steel, Alloy, Stainless Steel
Surface Treatment: Polishing, Passivation, etc.
Application: Machinery Accessory
Production Type: Single Production
Machining Method: CNC Machining
Color: Customizable
Technical Support Provided: Provide Technical Support and Spare Parts Supply

Available configurations include standard, surface treatment, material, color and commonly used materials. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1 piece at US$56.40 – 58.80 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Precise Bearing Spacer Ring for Rock Wool Centrifuges?

The listed minimum order is 1 piece, at US$56.40 – 58.80 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$58.80 for 1–9 pieces; US$56.40 for 10+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Precise Bearing Spacer Ring for Rock Wool Centrifuges?

Standard: China GB Code, Cast Steel / Forged Steel / Stainless Steel / High; Material: Steel, Alloy, Stainless Steel; Surface Treatment: Polishing, Passivation, etc.; Application: Machinery Accessory; Production Type: Single Production; Machining Method: CNC Machining. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include standard, surface treatment, material, color and commonly used materials. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other spacers, bushings & distance sleeves are available?

The Spacers, Bushings & Distance Sleeves category lists 2,111 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/spacers-standoffs-binding-hardware/spacers-bushings-distance-sleeves/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

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US$56.40 – 58.80MOQ 1 pieceGet a quote WA