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6207 Deep Groove Ball Bearing 35x72x17mm
The 6207 bearing is the first 35mm-bore bearing in the 6200 heavy series — the threshold where deep groove ball bearings enter heavy industrial service. At 72mm OD and 17mm width, it carries 25.7 kN dynamic load with nine 11.112mm balls, spanning IEC frame 132 through 160 motors from 7.5 kW to 11 kW. The step up from the 6206 bearing where the drive-end bearing absorbs the combined demands of larger shaft torque, higher belt-tension side loads, and proportionally greater overhung moments. GCr15 bearing steel, ABEC-1 or ABEC-3 precision, and three sealing configurations.
Key Specifications
Sealing: Open, ZZ metal-shielded, or 2RS double rubber-sealed configurations. ZZ shields maintain 9,500 RPM without friction penalty. 2RS nitrile seals for wet, washdown, or outdoor industrial environments at 6,200 RPM.
Speed and Load: 9,500 RPM in open and ZZ configurations; 6,200 RPM in 2RS sealed. 25.7 kN dynamic load (Cr) and 15.3 kN static load (Cor) at standard CN clearance. Nine 11.112mm balls per row — the largest ball diameter in the 6200 series below 6210.
Material and Precision: Rings and balls in GCr15 bearing steel (AISI 52100 equivalent), through-hardened to HRC 60–64. Standard ABEC-1 and ABEC-3 precision grades. 100% dimensional inspection with batch-traceable reports.
Operating Direction: Single-row deep groove geometry absorbs combined radial and bidirectional axial loads. Axial capacity approximately 25 percent of radial dynamic rating — adequate for locating bearing duty on industrial pump, fan, and gearbox shafts.
Temperature Range: Standard polyurea grease rated -20°C to 120°C continuous. High-temperature synthetic grease and FKM seal options to 150°C for OEM orders.
For any inquiries, please contact with our Supporting Team at sales@yuanhecd.com.
| Model | 6207 |
| Type | Open / ZZ Shielded / 2RS Sealed |
| Bore (d) | 35 mm |
| OD (D) | 72 mm |
| Width (B) | 17 mm |
| Dynamic Load Cr | 25.7 kN |
| Static Load Cor | 15.3 kN |
| Max Speed | 9,500 RPM (Open/ZZ) / 6,200 RPM (2RS) |
| ABEC | ABEC-1 / ABEC-3 |
6207 bearing: the first 35mm-bore deep groove ball bearing in the 6200 heavy series. At 72mm OD and 17mm width, 25.7 kN dynamic load with nine 11.112mm balls — the largest ball diameter in the 6200 series below 6210. Spans IEC frame 132-160 motors from 7.5 kW to 11 kW. The step up from the 6206 bearing where the drive-end bearing absorbs larger shaft torque and belt-tension side loads.
Bore x OD x Width
35 x 72 x 17 mm
Dynamic Load Cr
25.7 kN
Static Load Cor
15.3 kN
Max Speed
9,500 RPM
Sealing
Open / ZZ / 2RS
Precision
ABEC-1 / ABEC-3
Shielding and Lubrication
The 6207 bearing ships in three configurations matched to operating environment. Open bearings suit oil-bath, circulating-oil, or oil-mist lubrication at the full 9,500 RPM speed rating — the standard for industrial pump shafts, gearbox intermediate shafts, and machine tool spindles where the lubrication system handles contamination control. ZZ metal shields use non-contact SPCC steel covers pressed into the outer ring, forming a labyrinth gap that blocks workshop debris, belt dust, and fiber contamination without friction penalty; speed remains 9,500 RPM.
2RS rubber seals employ nitrile (NBR) contact lips riding on the inner ring shoulder. The lip seals against water spray, cement dust, agricultural soil, and chemical washdown. Seal friction reduces the speed rating to 6,200 RPM with a seal lip temperature rise of 10u00b0C to 15u00b0C at rated speed. At 72mm OD and 17mm width, the 6207 bearing has a larger seal contact diameter than the 6206 bearing, resulting in proportionally higher seal friction torque. For applications requiring sealed operation above 6,200 RPM, consider a non-contact labyrinth seal integrated into the housing rather than a contact lip seal on the bearing itself.
Factory fill is polyurea-thickened mineral grease at 25 to 30 percent of free internal volume. The 17mm width and 72mm OD provide approximately 10.5 cmu00b3 of grease capacity — roughly 35 percent more than the 6206 bearing. For mining conveyor head pulleys, a heavy-duty lithium-complex grease with molybdenum disulfide (MoSu2082) solid lubricant additives can be specified for boundary-lubrication protection during startup after extended shutdown. For food-processing washdown, 440C stainless steel rings and FKM seals are available. For high-temperature industrial oven fan shafts, fluorinated grease with PTFE thickener is rated to 180u00b0C intermittent.
Performance
The 6207 bearing delivers 25.7 kN dynamic load and 15.3 kN static load. Nine balls of 11.112mm diameter — the first size in the 6200 series to break 10mm ball diameter — run in deep-groove raceways precision-ground to ABEC-1 or ABEC-3 tolerance. At 35mm bore, this is the bearing size where industrial machines transition from fractional-metric to full-metric shafting, and the 25.7 kN rating supports belt-tension side loads up to approximately 6.4 kN at a 1.2 service factor.
Against the 6007 bearing — same 35mm bore — the 6207 bearing adds 10mm OD (72mm vs 62mm) and 3mm width (17mm vs 14mm) for a 61 percent increase in dynamic load capacity (25.7 vs 16.0 kN). In an 11 kW belt-driven industrial fan at 1,450 RPM with 5.0 kN radial load at the drive end, the 6207 bearing delivers approximately 24,000 hours L10 versus 9,000 hours for the 6007 bearing — nearly tripling the bearing service interval and reducing bearing replacements from three to one over a 10-year equipment life.
Compared to the 6206 bearing (30x62x16mm, 19.5 kN), the 6207 bearing steps up to 35mm bore with a 32 percent load gain (25.7 vs 19.5 kN). A 35mm shaft carries 59 percent more torque capacity than a 30mm shaft of the same material — the point where manufacturers move from the 6206 bearing to the 6207 bearing at the 7.5 kW to 11 kW motor power band. Against the 6307 bearing (35x80x21mm, 33.4 kN), the 6207 bearing saves 8mm OD and 4mm width while retaining 77 percent of the load capacity — the standard selection when a 72mm housing bore is already designed into the machine frame.
OEM and Customization
Yuanhe supplies the 6207 bearing with full customization for volume orders. Standard internal clearance is CN. C3 clearance is specified for electric motor drive-end and industrial gearbox applications where the inner ring operates 10u00b0C to 20u00b0C hotter than the outer ring during continuous duty. C2 clearance suits machine tool spindle and precision rotary table applications. C4 clearance is available for press-fit housings and applications with high thermal gradients, such as dryer drum support rollers. C5 is available for extreme interference fits.
Grease options range from standard polyurea (general purpose, -20u00b0C to 120u00b0C) to low-noise polyurea for motor applications (tested below 30 dB(A) on 6207-sized bearings), fluorinated high-temperature grease (intermittent to 180u00b0C), and NSF H1 food-grade grease. Stainless steel 440C rings and balls are available for pump, marine, and chemical processing service; 440C dynamic load rating decreases to approximately 20.6 kN. Cage materials: glass-fiber-reinforced PA66 (standard), machined brass for continuous duty above 120u00b0C or shock-loaded applications, and pressed steel for cost-optimized volume production. For mining conveyor pulleys, a solid-grease fill with MoSu2082 EP additives resists washout and provides boundary-lubrication protection during loaded startup. Standard lead time is 7 to 15 days with batch dimensional and noise-test reports. Submit your specification or drawing for a quote.
Applications
Electric motors from 7.5 kW to 11 kW (IEC frame sizes 132-160), industrial fan and blower drive-end and non-drive-end bearings, centrifugal and split-case pump impeller and motor shafts, air and refrigerant compressor crank and motor shaft bearings, industrial gearbox input, intermediate, and output shaft bearings, medium-to-heavy conveyor head and tail pulleys, automotive alternator and water pump bearings in heavy-duty and off-highway vehicle applications, machine tool spindle and feed-axis support bearings, agricultural combine harvester and baler shaft bearings, textile loom and spinning frame drive shaft bearings, material handling idler and roller bearings, HVAC air-handling unit and industrial oven fan shaft bearings, and dryer drum support roller bearings. Any application requiring a 35mm shaft within a 72mm housing bore.
Frequently Asked Questions
What is the difference between the 6207 bearing and the 6007 bearing? +
Both fit a 35mm shaft. The 6207 bearing measures 72mm OD x 17mm width with 25.7 kN dynamic load. The 6007 bearing measures 62mm OD x 14mm width with 16.0 kN dynamic load — 61 percent less capacity. The 6207 bearing requires 10mm more housing diameter and 3mm more width. In an 11 kW belt-driven fan at rated load, the 6207 bearing delivers nearly three times the L10 life of the 6007 bearing. Choose the 6007 bearing when housing diameter is the binding constraint. Choose the 6207 bearing when drive-end loads and fatigue life govern the bearing specification.
How does the 6207 bearing compare to the 6206 bearing? +
The 6207 bearing steps up to 35mm bore (from 30mm), 72mm OD (from 62mm), and 17mm width (from 16mm). Dynamic load increases from 19.5 kN to 25.7 kN — a 32 percent gain. Ball diameter increases from 9.525mm to 11.112mm — the first size in the 6200 series to break 10mm ball diameter. A 35mm shaft carries 59 percent more torque than a 30mm shaft. Motor and pump manufacturers switch from the 6206 bearing to the 6207 bearing at the 7.5 kW to 11 kW power band as shaft diameter increases to handle higher transmitted torque.
Can the 6207 bearing be used as the drive-end bearing in a heavy conveyor head pulley? +
Yes. The 25.7 kN dynamic rating supports belt-tension side loads up to approximately 6.4 kN at the bearing centerline with a 1.2 service factor for moderate shock duty. For troughed belt conveyors where the resultant radial force vector combines belt tension, material weight, and idler misalignment, calculate the total radial reaction at each bearing position. For outdoor mining conveyors subject to rain and abrasive dust, specify C3 clearance with ZZ shields mounted in a plummer block housing with a labyrinth seal and grease nipple for quarterly relubrication. If the resultant radial load exceeds 12.8 kN (50 percent of Cr), step up to the 6307 bearing.
What lubrication configuration is recommended for a 6207 bearing in an industrial oven fan at 180u00b0C? +
Open configuration with fluorinated high-temperature grease and PTFE thickener, rated to 180u00b0C intermittent. Standard polyurea grease is limited to 120u00b0C continuous. For 180u00b0C duty, the bearing must run in open configuration because NBR 2RS seals harden above 120u00b0C and FKM seals are limited to 150u00b0C. A machined brass cage is required — glass-reinforced PA66 softens above 120u00b0C. Specify C4 radial clearance to accommodate the differential thermal expansion between the inner ring (hotter, from shaft conduction) and the outer ring (cooler, from housing radiation). Verify radial internal clearance at operating temperature against the CN cold-mount clearance to ensure the bearing does not preload itself as it reaches steady-state temperature.
