220-ZZ bearing: complete specifications & equivalents
The 220-ZZ is a ISO 15 radial bearing sized 100 x 180 x 34 mm (bore x OD x width) with ZZ sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 100 mm |
| Outer diameter D | 180 mm |
| Width B | 34 mm |
| Material | GCr15 |
| Seal / shield | ZZ |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 134 kN |
| Basic static load rating C0 | 140 kN |
| Fatigue load limit Pu | 5 kN |
| Reference speed (thermal) | 6300 rpm |
| Limiting speed (mechanical) | 4000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 3450 g |
| Manufacturer designation | 220-2Z |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 200-series range
| Bore d | 3.937 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 1.339 in |
| ISO bore code | 20 |
| Radial section height (D−d)/2 | 40 mm |
| Smallest bore in 200-series | 30 mm |
| Largest outer diameter in 200-series | 180 mm |
| Width range across 200-series | 16–34 mm |
| Bore position in 200-series (smallest first) | 15 of 15 |
| Bore above smallest 200-series size | 70 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6220-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | NSK bearing NSK 6220VV on the same 100×180×34 mm envelope, but catalogue C/C0 differ (134/140 kN vs 134/93 kN) — envelope interchange only after a load check. |
| 6220-M | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 100×180×34 mm envelope as SKF 6220 M, but catalogue C/C0 differ (134/140 kN vs 127/93 kN) — envelope match only after a load check. |
| 220 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 100×180×34 mm envelope and equivalent catalogue ratings; 220 is the open arrangement execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| 6220 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6220 shares the 100×180×34 mm envelope but catalogue C/C0 differ (134/140 kN vs 127/93 kN) — envelope match, not a load-rating equivalent. |
| 6220-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6220-2Z shares the 100×180×34 mm envelope but catalogue C/C0 differ (134/140 kN vs 127/93 kN) — envelope match, not a load-rating equivalent. |
| 6220-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6220-2RS1 shares the 100×180×34 mm envelope but catalogue C/C0 differ (134/140 kN vs 127/93 kN) — envelope match, not a load-rating equivalent. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 220-ZZ model number is decoded
220-2Z is a filling-slot (notched-ring) deep-groove bearing in the legacy 200-series: the last two digits encode the bore: 220 carries code 20 = 100 mm (code × 5). The rings carry loading slots that allow extra balls during assembly, which is what gives the 100×180×34 mm envelope its C 134 kN and C0 140 kN ratings (Pu 5 kN). SKF spells the double shield 220-2Z (suffix 2Z); the shields are non-contact, retain grease and block coarse debris but are not liquid-tight. Limiting speed 4000 r/min, mass 3450 g. These bearings are built for high purely-radial loads at moderate speeds.
Typical equipment & failure modes
Common applications
- farm machinery and harvesters
- construction equipment drives
- hoists and winch gear trains
- eccentric and vibratory conveyors
Known failure patterns
- spalling of the filling-slot edge when balls are hammered through the slot under heavy thrust loading
- dirt entering through the open slot area when external sealing is neglected
- cage damage from running beyond the limiting speed
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- 220 uses the legacy SKF 200/300 numbering (light/heavy filling-slot series), not the modern 6200/6300 spelling; quote 220-2Z exactly when ordering replacements.
- Filling-slot bearings take heavy purely-radial load at moderate speed but little thrust; the 134/140 kN ratings assume radial loading — use deep-groove 6xxx where axial load matters.
- Shields on 220-ZZ retain grease but do not seal against water; for wet farm duty add external lip seals rather than trusting the shield.
- Limiting speed is just 4000 r/min: filling-slot cages and the slot geometry run cooler below that — overspeed drives cage wear and smearing.
- Shields on 220-ZZ retain grease but do not seal against water; for wet farm duty add external lip seals rather than trusting the shield.
- Deep-groove geometry tolerates only minutes of misalignment; if the 180 mm housing bore cannot be aligned, move to a self-aligning bearing rather than shimming 220-ZZ.
Frequently asked questions
What are the dimensions of 220-ZZ?
Filling-slot bearing 220-2Z measures 100×180×34 mm (3.937×7.087×1.339 in), about 3450 g.
What does the designation 220 mean?
It is the legacy 200/300 filling-slot numbering: series 200 and bore code 20 = 100 mm. Filling-slot bearings predate the 6xxx deep-groove spelling.
Is 220-ZZ available sealed?
Shielded executions (-2Z, listed here as 220-ZZ) exist; contact-sealed versions are generally not produced for the filling-slot family.
What is a filling-slot bearing?
The inner and outer rings each have a loading slot; when aligned, extra balls can be inserted, raising radial rating (C 134 kN for 220-ZZ). The slots also make the rings separable.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-27. Read our editorial & correction policy.