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Oct . 25, 2025 12:35 Back to list

6418-M High Quality Deep Groove Ball Bearing 90X225X54 Quiet


Why engineers keep shortlisting the 6418-M High Quality Deep Groove Ball Bearing 90X225X54

I’ve been around shop floors and maintenance bays long enough to spot a “quiet achiever.” This one fits the bill. The 6418-M High Quality Deep Groove Ball Bearing 90X225X54 is a straightforward workhorse—90 mm bore, 225 mm OD, 54 mm width—with a solid brass cage (“M”) that shrugs off heat and misalignment better than you’d expect. Many customers say it’s the set-and-forget option for high-inertia drives.

6418-M High Quality Deep Groove Ball Bearing 90X225X54 Quiet

Quick technical snapshot

Bore (d)90 mm
Outside diameter (D)225 mm
Width (B)54 mm
Design / CageSingle-row deep groove, solid brass “M”
PrecisionISO 492 P6 (P5 optional)
ClearanceCN standard; C3/C4 optional
Dynamic load rating C≈130 kN (ref. ISO 281; real-world use may vary)
Static load rating C0≈97 kN (ref. ISO 76)
Limiting speed (grease/oil)≈3,000 / 3,800 rpm (application-dependent)
Weight≈10.2 kg
SealingOpen; ZZ / 2RS on request
OriginNo. 3, Area B, Bearing Industry Mass Entrepreneurship Park, Beihuan Road, Linxi County, Xingtai City, Hebei Province
6418-M High Quality Deep Groove Ball Bearing 90X225X54 Quiet

Industry pulse

Two trends I keep hearing about: traceability and vibration. To be honest, after the last few supply chain hiccups, buyers want serial-level tracking and ISO 15242 vibration data out of the box. The 6418-M High Quality Deep Groove Ball Bearing 90X225X54 checks both with QR traceability and V2-level options for quieter drives.

How it’s built (short version)

  • Materials: GCr15/100Cr6 bearing steel, vacuum-degassed; brass machined cage.
  • Methods: CNC ring turning, heat treatment, precision grinding, superfinishing (Ra ≈0.02–0.04 μm).
  • Testing: Dimensional per ISO 492; hardness 60–64 HRC (ASTM E18); vibration per ISO 15242; load ratings validated to ISO 281/76.
  • Service life: With clean oil and proper preload, L10h commonly >25,000 h at Pr ≈35 kN and n ≈1,800 rpm.
6418-M High Quality Deep Groove Ball Bearing 90X225X54 Quiet

Where it earns its keep

Heavy electric motors, large HVAC fans, paper mill rolls, mining conveyors, centrifugal pumps, and gearbox input shafts. Surprisingly versatile for a big single-row groove design.

Advantages: high rpm capability, low friction torque, excellent heat tolerance from the brass cage, and easier lubrication flow compared with polymer/pressed alternatives.

6418-M High Quality Deep Groove Ball Bearing 90X225X54 Quiet

Vendor comparison (indicative)

Attribute BTZ 6418-M Generic Import A EU Premium B
Steel grade100Cr6, vacuum-degassed100Cr6, standard100Cr6, VD/VAR
CageSolid brass (M)Pressed steelBrass
ToleranceISO P6 (P5 opt.)P0–P6P6/P5
Vibration gradeV2 availableV3–V4V1–V2
Lead time≈10–20 days≈30–45 days≈14–21 days
Warranty24 months6–12 months24 months
TraceabilityQR serial, batch CoCBatch onlyFull
Price index1.00.81.6

Indicative values for comparison only; verify to your spec.

6418-M High Quality Deep Groove Ball Bearing 90X225X54 Quiet

Customization and support

  • Clearance: CN, C3, C4
  • Grease: high-temp polyurea, PAO ester, or food-grade (NSF H1) on request
  • Seals/Shields: open, ZZ, 2RS
  • Specials: anti-corrosion coating, V2 low-vibration sorting, matched pairs

Real feedback? A maintenance lead at a limestone plant told me they pushed the 6418-M High Quality Deep Groove Ball Bearing 90X225X54 past a hot summer with fewer re-lubes than planned—“temps ran cooler than last year.” Not a lab report, but it tracks with the brass-cage heat behavior.

6418-M High Quality Deep Groove Ball Bearing 90X225X54 Quiet

Mini case notes

Paper mill drive roll: Swapped a pressed-steel cage 6418 for the brass “M”; vibration dropped a notch (V3→V2), grease interval extended by ≈20%.

Quarry conveyor head pulley: After alignment and fresh oil, L10h modeling suggested >30,000 h; six-month follow-up showed stable temperatures and no spalling in ultrasound checks.

Citations

  1. ISO 281:2007 Rolling bearings — Dynamic load ratings and rating life.
  2. ISO 76:2006 Rolling bearings — Static load ratings.
  3. ISO 492:2014 Rolling bearings — Radial bearings — Tolerances.
  4. ISO 15242-1:2015 Rolling bearings — Measuring methods for vibration — Part 1.
  5. ASTM E18-20 Rockwell Hardness of Metallic Materials.
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