5307SCZZ bearing: complete specifications & equivalents
The 5307SCZZ is a ISO 15 radial bearing sized 35 x 80 x 34.9 mm (bore x OD x width) with ZZ sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 35 mm |
| Outer diameter D | 80 mm |
| Width B | 34.9 mm |
| Material | GCr15 |
| Seal / shield | ZZ |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 44 kN |
| Basic static load rating C0 | 33.5 kN |
| Fatigue load limit Pu | 2 kN |
| Limiting speed (mechanical) | 5600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 790 g |
| Manufacturer designation | NTN 5307SCZZ |
| 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 & 5300S-series range
| Bore d | 1.378 in |
|---|---|
| Outer diameter D | 3.15 in |
| Width B | 1.374 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 22.5 mm |
| Smallest bore in 5300S-series | 15 mm |
| Largest outer diameter in 5300S-series | 150 mm |
| Width range across 5300S-series | 19–63.5 mm |
| Bore position in 5300S-series (smallest first) | 6 of 13 |
| Bore above smallest 5300S-series size | 20 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 5307SCZZ model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, 5307SCZZ appears as a heavy-duty 5300S double-row family bearing of 35 mm bore, 80 mm outside diameter and 34.9 mm width. NTN builds the number from 53 is the double-row dimension series (heavy-duty 5300S double-row family), then 07 encodes the 35 mm bore (bore code x 5), and CZZ marks the double-row SC internal design with pressed-steel shields on both sides. With C 44 kN and C0 33.5 kN, each mm of bore carries about 1.26 kN of dynamic rating. Selection starts from the thrust share: as axial load grows past roughly half the radial load, an angular-contact position of this section usually outlives a deep-groove one. Heat-mounting to 80-90 deg C is the clean route onto a 35 mm shaft; drive-fits through the balls transmit force through the contact ellipse and can brinell it.
Typical equipment & failure modes
Common applications
- electric motor shafts with axial locating duty
- conveyor drive and tension-drum shafts
- agricultural gearbox and PTO shaft supports
- printing-press cylinder and folder 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
- flaking that starts at the raceway shoulder on the thrust-loaded side when axial load repeatedly exceeds the design share
Selection pitfalls — read before you substitute
- In this size class the common miss is lubrication interval, not fit — a 35 mm spindle at the catalogue speeds needs a calculated relubrication plan, not a calendar one.
- Sealed ZZ shielded executions are grease-for-life: there is no relubrication path, so the grease life calculation replaces the relubrication plan.
- A 5307SCZZ mounted the wrong way round still turns smoothly by hand; the failure shows up weeks later as raceway flaking on the unloaded-looking side.
- The C0 of 33.5 kN is a static rating, not a permissible running thrust — sizing continuous axial load from C0 alone is a recurring drawing-office error.
- On a 35 mm shaft, an interference fit eats internal clearance; skipping the clearance/preload recalculation is the classic cause of a new bearing running 20 deg C hotter than the drawing suggests.
- The 44/33.5 kN ratings and 2 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 5307SCZZ; 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 5307SCZZ?
5307SCZZ is a sealed double-row angular contact ball bearing to ISO 15: 35 mm bore, 80 mm outside diameter, 34.9 mm width (1.378 x 3.15 x 1.374 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 44 kN, C0 33.5 kN and a 2 kN fatigue load limit Pu; the grease limiting speed is 5,600 r/min and the oil rating 7,500 r/min; mass about 790 g.
How is the 5307SCZZ designation structured?
53 is the double-row dimension series (heavy-duty 5300S double-row family); 07 encodes the 35 mm bore (bore code x 5), and CZZ marks the double-row SC internal design with pressed-steel shields on both sides. The 80 mm OD and 34.9 mm width follow the ISO 15 boundary-dimension plan for that series.
Which axial direction does 5307SCZZ support?
5307SCZZ is a sealed double-row bearing: thrust in both directions, radial and moment load in one envelope, with pressed-steel shields that keep the open-bearing speed ratings.
What lubrication speeds does NTN print for 5307SCZZ?
Per NTN Ball and Roller Bearings CAT.No.2203E, the grease limiting speed is 5,600 r/min and the oil rating 7,500 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 5307SCZZ?
The 35/80/34.9 mm envelope is ISO 15 interchangeable, but internal geometry — contact angle, osculation, cage and shoulder details — is maker-specific. Re-verify C 44 kN / C0 33.5 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.