7219-NTN bearing: complete specifications & equivalents
The 7219-NTN is a ISO 15 radial bearing sized 95 x 170 x 32 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 95 mm |
| Outer diameter D | 170 mm |
| Width B | 32 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 148 kN |
| Basic static load rating C0 | 118 kN |
| Fatigue load limit Pu | 8.05 kN |
| Limiting speed (mechanical) | 4100 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 2670 g |
| Manufacturer designation | NTN 7219 |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 7200-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 6.693 in |
| Width B | 1.26 in |
| ISO bore code | 19 |
| Radial section height (D−d)/2 | 37.5 mm |
| Smallest bore in 7200-series | 10 mm |
| Largest outer diameter in 7200-series | 540 mm |
| Width range across 7200-series | 9–85 mm |
| Bore position in 7200-series (smallest first) | 20 of 36 |
| Bore above smallest 7200-series size | 85 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 7219-NTN model number is decoded
From the medium-duty 7200 single-row family, 7219 measures 95 mm across the bore, 170 mm over the outer ring and 32 mm across the faces. The designation breaks down as 72 is the single-row dimension series (medium-duty 7200 single-row family); 19 encodes the 95 mm bore (bore code x 5); with no letter after the digits it is the standard 30 deg contact-angle execution — the 40 deg version carries a B. NTN prints 148 kN dynamic and 118 kN static for this size and a 8.05 kN fatigue load limit Pu. If the duty is mainly high speed with modest thrust, the 7900-series cross-section is the lighter alternative; if thrust dominates, the 7300-series section carries more. Mount with the thrust against the marked face: the contact angle runs from the low shoulder of the inner ring to the high shoulder of the outer ring, and reversing it throws the capacity away.
Typical equipment & failure modes
Common applications
- large pump, fan and compressor rotor shafts
- crane and hoist gearbox shafts
- paper-machine roll and calendar drives
- extruder and mixer gearbox output shafts
Known failure patterns
- false brinelling on the raceway contact ellipses when a preloaded spindle sits vibrating at standstill — visible as evenly spaced flute-like wear at ball pitch
- thermal runaway from excessive preload: the pair runs hot, grease darkens and the contact ellipse spreads until the raceways smear
- pressed-steel cage pocket wear and rivet loosening after repeated ball skid at light load and high speed
- contamination-induced denting — hard particles rolled into the contact ellipse become the initiation points for surface fatigue
- lubricant starvation scoring at the ball/raceway contact when grease volume or relubrication interval is guessed instead of calculated
Selection pitfalls — read before you substitute
- Bearings of 95 mm bore arrive heavy enough that handling damage (dents from slings, tilting on the shaft) is a real failure precursor — use proper lifting and heating kit.
- The standard 30 deg bearing and its B (40 deg) sibling share the envelope; picking between them is a load-direction decision, not a quality upgrade.
- The 4,100 r/min speed figure assumes the catalogue lubrication state and a correctly set pair; real limits drop fast with excess grease fill or heavy preload.
- Never use a four-point or double-row bearing as a like-for-like swap for a single 7219 without re-checking axial float, heat and housing width — the kinematics differ.
- Never use a four-point or double-row bearing as a like-for-like swap for a single 7219 without re-checking axial float, heat and housing width — the kinematics differ.
- The 148/118 kN ratings and 8.05 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 7219; internal geometry legitimately differs between manufacturers, so re-verify ratings, contact angle and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 7219?
7219 is a single-row angular contact ball bearing to ISO 15: 95 mm bore, 170 mm outside diameter, 32 mm width (3.74 x 6.693 x 1.26 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 148 kN, C0 118 kN and a 8.05 kN fatigue load limit Pu; the grease limiting speed is 4,100 r/min and the oil rating 5,500 r/min; mass about 2670 g.
How is the 7219 designation structured?
72 is the single-row dimension series (medium-duty 7200 single-row family); 19 encodes the 95 mm bore (bore code x 5); with no letter after the digits it is the standard 30 deg contact-angle execution — the 40 deg version carries a B. The 170 mm OD and 32 mm width follow the ISO 15 boundary-dimension plan for that series.
Which axial direction does 7219 support?
One 7219 alone takes thrust in one direction only, along its 30 deg contact angle; reversing thrust calls for a second bearing or a factory-matched DB/DF/DT pair (the catalogue right-hand columns list the paired ratings). Radial load is always carried as a combined load through the angled contact.
What lubrication speeds does NTN print for 7219?
Per NTN Ball and Roller Bearings CAT.No.2203E, the grease limiting speed is 4,100 r/min and the oil rating 5,500 r/min. These are catalogue ceilings for a correctly mounted bearing with the stated lubricant; preload, fill quantity, ambient heat and paired arrangements all move the real limit.
What should be checked before substituting another make for 7219?
The 95/170/32 mm envelope is ISO 15 interchangeable, but internal geometry — contact angle, osculation, cage and shoulder details — is maker-specific. Re-verify C 148 kN / C0 118 kN, the speed figures, contact angle and suffix meaning against the donor catalogue before swapping on a rated drive.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.