Bore (d): 31.75 mm/ 1.25 inch
Outer Diameter (D): 72.233 mm/ 2.8438 in
Cone Width (B): 25.400 mm/ 1 inch
Mass: 0.50kg/ 1.102lb
Cone Number: HM88644
Cup Number: HM88610
Cage: steel
Rollers & Rings: bearing steel
HM88644/HM88610 bearing is a single-row tapered roller bearing.
Bore (d): 31.75 mm/ 1.25 inch
Outer Diameter (D): 72.233 mm/ 2.8438 in
Cone Width (B): 25.400 mm/ 1 inch
Mass: 0.50kg/ 1.102lb
Cone Number: HM88644
Cup Number: HM88610
Cage: steel
Rollers & Rings: bearing steel
Sheilds: open
Clearance: standard C0, CN
Relubricate Holes: without
Also Known As: HM88644 / HM88610, HM88644-HM88610, HM 88644-HM 88610, HM88644 – HM88610, HM88644/610, HM88644/10, HM88644-99402
| Model Number | Specifications(dxDxB) | Mass(kg) |
| 2473/2420 | 25.400×68.262×22.225 | 0.440 |
| 02473/02420 | 25.400×68.262×22.225 | 0.430 |
| M88036/M88010 | 25.400×68.262×22.225 | 0.440 |
| 26100/26274 | 25.400×69.723×19.050 | 0.400 |
| HM88630/HM88610 | 25.400×72.233×25.400 | 0.580 |
| HM88630/HM88610A | 25.400×72.233×25.400 | 0.580 |
| 41100/41286 | 25.400×72.626×24.608 | 0.500 |
| 3189/3120 | 25.400×72.626×30.162 | 0.650 |
| HM88630/HM88612 | 25.400×73.025×26.543 | 0.610 |
| L44645/L44613 | 25.987×51.986×15.011 | 0.140 |
| 15579X/15520 | 25.987×57.150×17.462 | 0.210 |
| 15103/15243 | 26.157×61.912×19.050 | 0.290 |
| 15103/15245 | 26.157×62.000×19.050 | 0.290 |
| 15103-S/15243 | 26.162×61.912×19.050 | 0.290 |
| 2684/2631 | 22.225 ×66.421×25.433 | 0.460 |
| 1987/1932 | 26.975×58.738×19.050 | 0.240 |
| 1987/1931 | 26.975×60.325×19.355 | 0.270 |
| L44649/L44610 | 26.987×50.292×14.224 | 0.120 |
| L44649/L44613 | 26.987×51.986×15.011 | 0.140 |
| 15580/15520 | 26.987×57.150×17.462 | 0.200 |
| M84549/M84510 | 26.987×57.150×19.431 | 0.230 |
| 1997X/1922 | 26.988×57.150×19.845 | 0.230 |
| 15580/15523 | 26.987×60.325×19.842 | 0.260 |
| 15106/15245 | 26.987×62.000×19.050 | 0.290 |
| HM89440/HM89410 | 31.750×76.200×29.370 | 0.680 |
| 3188/3129 | 31.750×76.200×30.162 | 0.670 |
| 3193/3129 | 31.750×76.200×30.162 | 0.670 |
| 43125/43312 | 31.750×79.375×25.400 | 0.580 |
| 3476/3420 | 31.750×79.375×29.370 | 0.740 |
| 346/332A | 31.750×80.000×24.176 | 0.590 |
| 346/3320 | 31.750×80.167×26.988 | 0.630 |
Single-row tapered roller design (cup and cone) for easy assembly/disassembly — the HM88644/HM88610 bearing’s separable cup and cone allow quick mounting, inspection, and replacement without disturbing the mating component.
Conical raceways with tapered rollers for combined radial and axial load support (axial in one direction) — the tapered geometry provides stable rolling contact that handles both heavy radial loads and thrust loads along one direction.
High radial and axial load capacity; increased contact angle raises axial capacity — engineered contact angles and roller profiles deliver higher load ratings and better performance under combined loading.
Open internal design; requires pairing (mirror-image) for full axial support — the open design improves cooling and reduces friction but needs a matched opposite bearing to handle bidirectional axial forces.
Comparison helps when dimensional fit is only part of the decision and load direction, sealing, clearance, speed, temperature, or repeat-order stability still need to be confirmed. Reviewing one or two nearby options early usually reduces sourcing mistakes later.
Buyers normally confirm the part reference, main dimensions, application, speed range, operating environment, sealing needs, and any packaging or marking requirements. That gives the supplier a cleaner basis for confirming availability and suitable alternatives.
A quick review of Taper Roller Bearings, one more commercial destination, and one practical guide usually saves time. That combination helps separate simple replacement orders from jobs that still need fit or application review.
Because it makes later decisions faster. When sizing notes, application cues, and nearby options stay close to the product, engineering, purchasing, and maintenance teams can revisit the same logic without starting the review from zero.
1. Sea shipping for mass cargos (GW > 500KGS)
2. Air shipping (GW between 100KGS – 500 KGS)
3. Express, such as DHL, TNT, Fedex, UPS for small cargos ( GW < 100KGS)
4. If you have shipping agent in China, we can send goods to your shipping agent's warehouse
We accept T/T, W/U, PAYPAL, L/C etc
Buyer FAQ
Confirm the bearing number, bore size, outside diameter, width, seal or shield type, cage material, clearance, precision level, quantity, and application. These details help prevent a size match from becoming a performance mismatch.
Yes. Replacement and repeat orders are easier when the original marking, measured dimensions, photos, application, and quantity are available. If the marking is unclear, the team can start from the size and working condition.
This item is handled within the Taper Roller Bearings family. Comparing the family page can help buyers review similar sizes, seal options, load direction, and related bearing choices before requesting a quote.
Price and lead time can change with quantity, stock availability, precision grade, clearance, material, cage, seal or shield type, lubrication, packaging, and whether the order needs standard matching or custom production.
Inspection can include material review, dimensional measurement, noise and vibration checks, surface and crack checks, visual review, and packaging inspection according to the confirmed order requirements.
Need help checking fit, price, or lead time? Request a bearing quote
No account yet?
Create an Account
