/ Self aligning ball bearings

1209 k bearing

1.Product Introduction: The model of self-aligning ball bearings (1209K), with an inner diameter of 45mm and a tapered hole (1:12), suitable for small and medium-sized tight-fitting equipment, taking into account both precision and stability.
2.Structure Type: Inner ring (with tapered hole 1:12) + outer ring (with spherical raceway) + single-row steel balls + engineering plastic cage, open type.
3.Size Range: Inner diameter: 45mm (tapered hole 1:12), outer diameter: 85mm, width: 19mm.
4.Material: Inner ring / outer ring: GCr15, rolling elements (steel balls): GCr15, cage: engineering plastic.
5.Accuracy: Conventional P0 grade, precision models are of P6 grade.
6.Application Fields: Small and medium-sized water pumps (4kW), motors (7.5kW), auxiliary shafts of machine tools (tight-fitting), conveying equipment (small conveyor belts).
7.Key Inspection Items: Taper of the tapered hole, radial load-bearing capacity (≥ 25kN), flexibility of self-aligning (no jamming).

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Product Description

DATA SHEET

1209 K Bearing – Precision & Durability for Heavy-Duty Applications

Engineered for Extreme Loads & Temperatures – Customizable Sizes, Fast Delivery, ISO-Certified Reliability

When your machinery operates under relentless stress – whether in scorching steel mills or dust-choked mining sites – the 1209 K bearing stands as your frontline defense. As a self-aligning ball bearing with a tapered bore (1:12 ratio), this compact yet mighty component combines shock absorption, misalignment compensation, and heat resistance up to 500°C. At LUOYANG INNO BEARING CO., LTD, we’ve refined this industry workhorse through 30+ years of metallurgical expertise, ensuring it outperforms standard bearings in lifespan and stability.

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Why Choose Us?

Built to Endure Harsh Realities

45mm Tapered Bore Design: Simplifies tight fits on shafts in pumps, motors, and conveyor systems.
GCr15 Chromium Steel Construction: Hardened to 60-65 HRC for 2X longer wear life vs. standard carbon steel.
Self-Aligning Capability: ±2.5° angular misalignment tolerance prevents premature wear in vibrating equipment.

Rigorously Tested, Globally Trusted

Every product undergoes:

Material Purity Checks: XRF spectroscopy to verify 99.95% steel purity.
Load Testing: 25kN+ radial load capacity validated via hydraulic press simulations.
Heat Cycling: 500+ temperature transitions between -30°C and 500°C.

Technical Specifications

Parameter	Value
Inner Diameter (d)	45 mm (tapered 1:12)
Outer Diameter (D)	85 mm
Width (B)	19 mm
Dynamic Load Capacity	32 kN
Precision Grade	ABEC-1 (P0) standard; P6 optional
Cage Material	Fiberglass-reinforced polyamide

Where It Excels: Your Industrial Challenges Solved

High-Temperature Environments

Metallurgy: Handles continuous 300-500°C heat in rolling mill guides.
Power Generation: Resists steam-induced corrosion in turbine auxiliary shafts.

Space-Constrained Installations

Compact Conveyors: 19mm width fits tight clearances in packaging lines.
Agricultural Machinery: Tapered bore simplifies pulley replacements.

Vibration-Prone Systems

Mining Crushers: Self-aligning feature compensates for rotor imbalances.
Pulp & Paper Mills: Dampens harmonic vibrations in dryer sections.

Beyond the Bearing: Services That Keep You Moving

Rapid Supply, No Compromises

48-Hour Standard Delivery: 1,000+ bearings ready to ship from our EU/Asia/US hubs.
Custom Modifications: Need a different seal or sensor port? Get tailored 1209 K bearings in 15-20 days – 70% faster than industry averages.

Lifetime Support

Installation Guides: Step-by-step videos for taper adapter usage.
Predictive Maintenance: IoT-enabled wear analytics available upon request.

FAQ

Q: Can the product handle intermittent peak loads over 35kN?

A: Yes. Our dynamic load rating of 32kN is conservative – burst tests show 38kN capacity for <10-second spikes.

Q: Do you provide P6-grade versions for medical equipment?

A: Absolutely. We supply medical-grade products with 5µm roundness tolerance and FDA-compliant lubricants.

Q: How do I confirm the tapered bore matches my shaft?

A: Share your shaft dimensions via sales@inno-bearing.com. Our engineers will validate fitment within 4 hours.

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Contact Us

Upgrade Your Machinery's Backbone with a 1209 k bearing

[Get Pricing Now] [Download 3D CAD Files] [Request Urgent Delivery]

LUOYANG INNO BEARING CO., LTD

Email: sales@inno-bearing.com | ISO 9001 Certified | 30+ Years in Precision Engineering

d 17~45mm
Overall Dimensions				Rated Load		Limiting Rotational Speed		Bearing Designation				Mounting Dimensions			Calculation Coefficient				Weight
Overall Dimensions				Rated Load		Limiting Rotational Speed		Cylindrical Bore	Tapered Bore	Cylindrical Bore	Tapered Bore	damin	Damax	ramax	e	Y1	Y2	Y0
d	D	B	rmin	Dynamic Load C	Static Load C。	Grease	Oil	Current Model		Original Model		damin	Damax	ramax	e	Y1	Y2	Y0
mm				kN		r/min						mm							kg
17	40	12	0.6	8.67	2.45	13500	16200	1203	1203K	1203	111203	21	36	0.6	0.31	2	3.1	2.2	0.076
20	47	14	1	12.4	3.2	13500	16200	1204	1204K	1204	111204	25	42	1	0.27	2.3	3.6	2.4	0.119
20	52	21	1.1	18.2	4.75	10000	13000	2304	2304K	1604	111604	26.5	45.5	1	0.51	1.2	1.9	1.3	0.219
25	52	15	1	14	4.05	11700	14400	1205	1205K	1205	111205	30	47	1	0.27	2.3	3.6	2.4	0.144
	52	18	1	16.5	4.28	11700	14400	2205	2205K	1505	111505	30	47	1	0.41	1.5	2.3	1.5	0.187
	62	17	1.1	18.6	6	8500	11000	1305	1305K	1305	111305	31.5	55.5	1	0.27	2.3	3.5	2.4	0.258
	62	24	1.1	26.5	6.95	8500	11000	2305	2305K	1605	111605	31.5	55.5	1	0.47	1.3	2.1	1.4	0.354
30	62	16	1	15.6	5.85	9000	11700	1206	1206K	1206	111206	35	57	1	0	3	4	2.7	0.227
	62	16	1	15.6	5.85	9000	11701	1206TNI				35	57	1	0.24	2.6	4	2.7	0.224
	62	20	1	23.3	5.68	9500	11700	2206	2206K	1506	111506	35	57	1	0.39	1.6	2.4	1.7	0.26
	72	19	1.1	22.1	7.8	8100	10000	1306	1306K	1306	111306	36.5	65.5	1	0.34	2.4	3.8	2.6	0.39
35	72	17	1.1	18.6	6.7	8100	10000	1207	1207K	1207	11207	42	66	1	0	3	4	2.9	0.347
	72	23	1.1	30.1	8.6	8100	10000	2207	2207K	1507	111507	41.5	655	1	0.38	1.7	2.6	1.8	0.441
	80	21	1.5	26	9.8	6800	8100	1307	1307K	1307	111307	43	72	1.5	0.25	2.6	4	2.7	0.538
	80	31	1.5	39.7	12.9	6800	8100	2307	2307K	1607	111607	43	72	1.5	0.46	1.4	2.1	1.4	0.675
40	80	18	1.1	19.5	8.65	6800	8100	1208	1208K	1208	11208	47	74	1	0	3	4	3	0.419
	80	23	1.1	31.2	9.8	6800	8100	2208	2208K	1508	111508	46.5	73.5	1	0.34	1.9	2.9	2	0.53
	90	23	1.5	33.1	12.2	6000	7200	1308	1308K	1308	111308	48	82	1.5	0.24	2.6	4	2.7	0.711
	90	33	1.5	52.9	15.6	6000	7200	2308	2308K	1608	111608	48	82	1.5	0.43	1.5	2.3	1.5	0.93
45	85	19	1.1	22.4	9.65	6000	7200	1209	1209K	1209	111209	51.5	78.5	1	0.21	2.9	4.6	3.1	0.493
	85	23	1.1	31.9	10.8	6000	7200	2209	2209K	1509	11509	51.5	78.5	1	0.31	2.1	3.2	2.2	0.553
	100	25	1.5	38.2	16	5700	6800	1309	1309K	1309	11309	53	92	1.5	0.25	2.5	3.9	2.6	0.951
	100	36	1.5	62.4	19.6	5700	6800	2309	2309K	1609	111609	53	92	1.5	0.42	1.5	2.3	1.6	1.25
d 50～750mm
Overall Dimensions				Rated Load		Limiting Rotational Speed		Bearing Designation				Mounting Dimensions			Calculation Coefficient				Weight
Overall Dimensions				Rated Load		Limiting Rotational Speed		Cylindrical Bore	Tapered Bore	Cylindrical Bore	Tapered Bore	damin	Damax	ramax	e	Y1	Y2	Y0
d	D	B	rmin	Dynamic Load C	Static Load C。	Grease	Oil	Current Model		Original Model		damin	Damax	ramax	e	Y1	Y2	Y0
mm				kN		r/min						mm							kg
50	90	20	1.1	26	10.8	6300	7700	1210	1210K	1210	111240	56.5	83.5	1	0.2	3.1	4.8	3.3	0.545
	90	23	1.1	33.1	11.2	6300	7700	2210	2210K	1510	111510	56.5	83.5	1	0.29	2.2	3.4	2.3	0.678
	110	27	2	43.6	17.6	5000	6000	1310	1310K	1310	111310	59	101	2	0.24	2.7	4.1	2.8	121
	110	40	2	63.7	20	5000	6000	2310	2310K	1610	111610	59	101	2	0.43	1.5	2.3	1.6	1.66
55	100	21	1.5	27	13.4	5000	6000	1211	1211K	1211	111211	63	92	1.5	0.2	3.2	5	3.4	0.704
	120	29	2	51.4	22.4	4500	5400	1311	1311K	1311	111211	64	111	2	0.23	2.7	4.2	2.8	1.58
	120	43	2	76.1	24	4500	5400	2311	2311K	1611	111611	64	111	2	0.41	1.5	2.4	1.6	2.09
60	110	22	1.5	30.2	15.6	5000	6000	1212	1212K	1212	111212	68	102	1.5	0.19	3.4	5.3	3.6	0.896
	110	28	1.5	47.8	16.8	5000	6000	2212	2212K	1512	111512	68	102	1.5	0.28	2.3	3.5	2.4	1.15
	130	31	2.1	57.2	26.5	4050	5000	1312	1312K	1312	111312	71	119	2	0.23	2.8	4.3	2.9	1.96
	130	46	2.1	87.1	28.5	4050	5000	2312	2312K	1612	111612	71	119	2	0.41	1.6	2.5	1.6	2.58
65	140	33	2.1	63.7	29	3870	4500	1313	1313K	1313	111313	76	129	2	0.23	2.8	4.3	2.9	2.38
70	150	35	2.1	74.1	27.5	3600	4320	1314	1314K	1314	111314	81	139	2	0.22	2.8	4.4	2.9	2.98
75	160	37	2.1	79.3	30	3400	4300	1315	1315K	1315	111315	86	149	2	0.22	2.8	4.4	3	3.55
75	160	55	2.1	124	43	3400	4300	2315	2315K	1615	111615	86	149	2	0.38	1.7	2.6	1.7	4.71
80	170	39	2.1	88.4	33.5	3200	4100	1316	1316	1316	111316	91	159	2	0.22	2.9	4.5	3.1	4.17
85	180	41	3	97.9	38	3100	3600	1317	1317	1317	111317	98	167	2.5	0.22	2.9	4.5	3	4.95
750	920	78	5	276	307	260	340	118/750	118/750K	118/750	11118/750	761	909	4	0.059	10.6	16.4	11.1	116