SAE 841 Bronze or PTFE Flanged Bushings for Heavy Loads
A field-focused look at what flanged bushings do, the pre-installation safety and site checks, and a step-by-step procedure for pressing…
ISO 15 · ISO 355 · ISO 104 · DIN · GB/T
Deep groove, angular contact, tapered, cylindrical, spherical, needle and thrust bearings, housed units, linear and plain bearings, precision balls and accessories — to ISO, DIN and GB/T, with the full boundary-dimension table on every page. Find the exact designation you need in seconds.
- Full dimensional tables on every product
- Grades 8.8 / 10.9 / 12.9 and stainless A2 / A4
- Quotations answered within one business day
Bearings by Category
Browse the catalog by category and standard. Every product page lists the full dimensional table, materials, finishes, structured data and a quotation path.
Ball Bearings
Deep groove, sealed, shielded, miniature, thin-section and stainless ball bearings to ISO 15 / DIN 625 / GB/T…
View standards →Angular Contact Ball Bearings
Single row 7000 C/AC/B, double row 3200/3300 and four-point contact QJ bearings for combined radial and axial load,…
View standards →Self-Aligning Ball Bearings
Double row 1200, 1300, 2200 and 2300 series with a spherical outer raceway, in cylindrical and tapered bore,…
View standards →Cylindrical Roller Bearings
NU, NJ, NUP, N and NF single row plus NN/NNU double row and full-complement designs — the high…
View standards →Tapered Roller Bearings
Metric 30200, 30300, 32200, 32300, 32000, 33000 and 33100 series and inch series cup-and-cone sets, plus double row…
View standards →Spherical Roller Bearings
Double row 22200, 22300, 23000, 23100, 24000 and 24100 series in cylindrical and tapered bore — the highest…
View standards →Needle Roller Bearings
Drawn cup HK / BK, machined-ring NA and RNA, NKI with inner ring, cage-and-roller assemblies and track rollers…
View standards →Thrust Bearings
Single and double direction thrust ball 51100–51400 / 52200, thrust spherical roller 29300/29400 and thrust cylindrical roller 81100/81200,…
View standards →Insert Bearings & Housed Units
UC insert bearings with a setscrew or eccentric collar plus pillow block, square flange, two-bolt flange, take-up and…
View standards →Linear Motion Bearings
LM and LME recirculating ball bushings, open and flanged types, pre-assembled SC/SCS units and SBR shaft supports for…
View standards →Plain & Spherical Plain Bearings
Maintenance-free and steel-on-steel spherical plain bearings, rod ends, and cylindrical bushings — bronze, wrapped composite, solid-lubricant and PTFE-lined.
View standards →Bearing Accessories
Lock nuts and lock washers, adapter and withdrawal sleeves, shaft seals and mounting hardware — the parts a…
View standards →Precision Balls
The rolling element on its own: chrome steel, stainless, ceramic, carbon steel, brass and glass balls in ISO…
View standards →Engineering Reference
Bearing reference tables: designation decoding, radial internal clearance groups, shaft and housing fit tolerances, tolerance classes and lubrication…
View standards →Find the Bearing for Your Machine
Twelve of the positions we supply most often. Each one opens the selection guide for that bearing type — what it carries, how it mounts, and where it is the wrong choice.
Electric motors
Deep groove ball bearings at both ends of the rotor
Conveyors & material handling
Bolt-down housed units, no machined housing bore needed
Machine tool spindles
Angular contact pairs, preloaded and set at assembly
Wheel hubs & axles
Tapered roller bearings in opposition, heavy combined load
Vibrating screens & crushers
Spherical roller bearings — the highest load rating there is
Rolling mills
Cylindrical roller bearings for radial capacity in a fixed envelope
Agricultural machinery
Self-aligning bearings for shafts that will not stay in line
Food & beverage
Stainless bearings and washdown housings
Linear axes & automation
Recirculating ball bushings on hardened, ground shafting
Wind & heavy drives
Spherical roller bearings taking shaft deflection in their stride
Injection molding
Needle roller bearings where the radial section is the constraint
Lifting & rigging
Thrust bearings for pure axial load on a vertical axis
Why Bushing Bearings
A specialist bearing supply partner built around fast, accurate quotations.
01
Full ISO/DIN range
Ball, roller, thrust, needle and plain bearings plus precision balls, all to recognized international standards with complete boundary dimensions.
02
Any material & class
GCr15/100Cr6 bearing steel, AISI 440C and 316 stainless, Si3N4 and ZrO2 ceramic, bronze and PTFE-lined, in P0–P4 tolerance and C2–C4 clearance.
03
Fast quotations
Submit a request from any product page and get a tailored price and lead time within one business day.
Inside the plant
How your bearings are made
Every bearing we ship moves through the same six stages, in our own plant. The controls listed under each stage are the ones that decide whether a bearing holds its tolerance class, its clearance group and its noise grade — not marketing copy.
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01 Forging & turning
GCr15 bar and tube is cut, heated and forged into ring blanks, then turned to leave a uniform grinding allowance. Forging rather than machining from solid keeps the grain flow following the raceway, which is the surface that eventually fails.
Blank dimensions and grinding stock checked at set-up and per shift.
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02 Heat treatment
Through-hardening brings GCr15 / 100Cr6 to 58–64 HRC; carburizing case-hardens 20CrMnTi where the section is heavy or the load is shock. Rings are then stabilized so they hold size in service rather than growing in the housing.
Core and surface hardness per lot; retained austenite and dimensional stability to the ordered temperature class.
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03 Raceway grinding
Faces, bore, outer diameter and raceway are ground in sequence on separate machines. This is where the tolerance class is created: P0, P6, P5 or P4 is a grinding outcome, not a sorting outcome.
Bore and outer diameter deviation, raceway roundness and face runout measured to ISO 492 on every setup.
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04 Honing & superfinishing
The ground raceway is honed to remove the grinding lay and bring surface roughness down to a fraction of a micrometre. Raceway finish is what decides whether a lubricant film forms, and therefore what decides bearing life far more than the load rating alone.
Surface roughness Ra and waviness measured per lot.
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05 Assembly & clearance setting
Rings, rolling elements and cage are matched, and the rolling elements are selected by size group to land the radial internal clearance in the group ordered — C2, CN, C3 or C4. Seals or shields are pressed in and the bearing is greased to the specified fill.
Radial internal clearance gauged on every bearing to ISO 5753-1; grease weight verified.
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06 Noise, vibration & dispatch
Every bearing is run on a vibration stand and graded Z1 / Z2 / Z3, because a bearing that is dimensionally perfect and noisy is a warranty return. It is then rust-preventive coated, wrapped and boxed to your part numbering, with the lot number travelling in the carton.
Vibration level per bearing; lot traceability from carton back to the steel heat number.
3–200 mm
Bore range
P0 – P4
Tolerance classes
ISO 9001
Quality system
24 h
Quotation turnaround
Free Engineering Calculators
Bench-side tools for specifying and mounting bearings — rating life, equivalent load, shaft and housing fits, internal clearance, limiting speed, grease quantity and designation decoding. Open any tool below.
L10 Rating Life
L10 = (C/P)^p in millions of revolutions, and the hours behind it.
Equivalent Load P
P = X·Fr + Y·Fa, with X and Y taken from the e-value test.
Shaft & Housing Fit
Recommended ISO fit for the load case, and the interference it gives.
Internal Clearance
C2 / CN / C3 / C4 ranges by bore, and what the fit leaves behind.
Limiting Speed & dmn
Speed corrected for lubrication, and the dmn value behind it.
Grease Quantity
Initial fill and relubrication quantity from D and B.
Designation Decoder
Read a bearing number: type, series, bore code and suffixes.
Unit Converter
Length, force, torque, pressure and speed, metric to imperial.
From the blog
All articles →
Bearing Guides & Engineering Notes
Selection guides, standards explained, materials and coatings, torque and installation practice.
SAE 841 Bronze or PTFE Flanged Bushings for Heavy Loads
A field-focused look at what flanged bushings do, the pre-installation safety and site checks, and a step-by-step procedure for pressing…
Ball vs Bushing Bearings for ISO 492 Tolerance Specs
A specification-level comparison of ball bearings and bushing bearings for industrial design, covering boundary dimensions, tolerance classes, clearance, sealing, fits,…
Longer Shaft Life in Conveyors From One-Piece Plain Bushings
A bushing bearing is a cylindrical plain bearing that supports a shaft through sliding contact. This guide explains how it…
ISO 492 Bearing QC Checks Before Shipment
How Bushing Bearings verifies bearing and industrial bushing quality before shipment through ISO 492 dimensional checks, material control, clearance measurement,…
About Bushing Bearings
A specialist supply partner for ISO and DIN industrial bearings — built around accurate dimensional data and fast quotations.
We supply ball, angular contact, tapered, cylindrical, spherical and needle roller bearings, thrust bearings, insert bearings and housed units, linear and plain bearings, precision balls and bearing accessories to ISO, DIN and GB/T. Every product page carries the full boundary-dimension table — bore, outer diameter, width and corner radius for every designation in the series — the materials and cage options, an interactive half-section drawing and a single-click path to a quotation, so the engineer specifying the bearing finds what they need without leaving the page.
Our team responds to inquiries within one business day. Specifications include the standard, material, finish, lead time and price, so you can move from selection to purchase in one conversation.
110+Standard items across 14 categories
2500+Size / material / standard guides
15Free engineering calculators
1 dayQuote turnaround
Contact Us
Send a quote request from any product page, or reach the team directly.
Phone
+86 15999653684
Hours
Monday – Friday
9:00 – 18:00 your local time
Quote requests
Use the bearing finder or any product page's quote form — typically answered within one business day.