Deep Groove Ball Bearing

A deep groove ball bearing is the most widely used type of rolling-element bearing: one row of balls in deep raceway grooves, carrying radial loads and axial loads in both directions at high speeds. FULI is a deep groove ball bearing manufacturer in Linqing, Shandong: our factory makes the 6000, 6200 and 6300 series, and we supply eight series in all, from the thin-section 6700 to the heavy 6400, open, shielded or sealed. Our bearing manufacturer page shows the other types we make. Below: how the series differ, how to read the size chart, and what to check before a wholesale or OEM order.

Deep groove ball bearing range and series at FULI

The model table above lists every size on this site with its bore (d), outside diameter (D) and width (B) taken from our specification sheet. The series prefix tells you the proportions. In the standard designation system the digit 6 means single row deep groove ball bearing, the next digit is the diameter series, and the last two digits are the bore code. For the same bore, the 6200 series has a larger outside diameter and width than the 6000 series, and the 6300 series is larger again, which is why a 6305 carries more than a 6005 on the same 25 mm shaft.

Series	Bore range (mm)	Outside diameter (mm)	Width (mm)	Sizes on this site
6700 (thin section)	10 to 30	15 to 37	4	7
6800 (thin section)	10 to 160	19 to 200	5 to 20	28
6900 (extra light)	10 to 160	22 to 220	6 to 28	28
16000 (narrow)	12 to 160	28 to 240	7 to 25	22
6000 (light, narrow)	10 to 160	26 to 240	8 to 38	31
6200 (light)	10 to 160	30 to 290	9 to 48	31
6300 (medium)	10 to 160	35 to 340	11 to 68	31
6400 (heavy)	17 to 130	62 to 340	17 to 78	22

At FULI the 6200 series is the one we ship most, because it is the series that motor makers, pump assemblers and agricultural gearbox builders specify by default. The 6000 series, 6200 series and 6300 series standard series pages list every size, and the series selector compares them for one shaft. The 6700, 6800 and 6900 series are thinner rings for tight spaces. Bores below 10 mm are miniature bearings, which are not listed on this site.

Single row deep groove ball bearing versus double row

A single row deep groove ball bearing has one ring of balls and is available open or capped with shields or seals. It is the design this deep groove ball bearing page and the model table cover. A deep groove ball bearing double row (type code 4) puts two rows of balls in the same bore and outside diameter; the double row bearing is slightly wider than the single row 62 or 63 series equivalent and has a considerably higher load carrying capacity, but it is made open only, without seals or shields.

In our experience the double row version is asked for when a machine builder wants more capacity without changing the housing bore. The trade-off is that you lose the sealed option, so the housing has to provide the sealing. FULI lists single row sizes on this site; if you need a double row equivalent for one of the listed bores, send the model number and we will confirm availability with the quote.

Deep groove radial ball bearing: how it carries load

The names “deep groove radial ball bearing” and “deep groove bearing” describe the same product. Radial is the primary load direction: balls make point contact with the ring raceways, the small contact area gives low rolling friction and lets the bearing run at high speed, but it also limits load carrying capacity compared with a roller bearing of the same size. Because the grooves are deep, the bearing also takes axial load in both directions, which is what separates it from an angular contact ball bearing that handles axial load in one direction only.

Two variants that are easy to confuse with a regular deep groove ball bearing:

• Filling slot bearings have a slot cut in the rings so that more balls can be inserted; radial capacity rises, but axial capacity is sacrificed because of the slot.
• Stainless steel deep groove ball bearings share the same dimensions but have a lower load carrying capacity than the same size in high chromium steel.
• Hybrid bearings replace the steel balls with ceramic ones. They suit high-speed spindles and insulate against shaft currents in inverter-driven motors. Stainless and ceramic versions are not listed on this site.

If the load on your shaft is mainly radial and heavy, or there is misalignment, the comparison in ball bearing vs roller bearing explains when a cylindrical, tapered or spherical roller bearing is the better fit.

Deep groove ball bearing vs angular contact and roller bearings

Type	Load it suits	Speed	Misalignment
Deep groove ball bearing	Moderate, with thrust both ways	High	Minutes of arc
Angular contact bearing	Combined, thrust one way; fitted in pairs	High	Minutes of arc
Self-aligning ball bearings	Light, little thrust	High	A few degrees
Cylindrical roller bearings	Heavy, little or no thrust	High	Minutes of arc
Tapered roller bearing	Heavy, thrust one way; set in pairs	Medium	Minutes of arc
Spherical roller bearing	Heavy, moderate thrust	Medium	Up to about 2°

Roller bearings have more load capacity for their size because rollers make line contact. A ball bearing has a smaller contact area between the balls and raceways, so it runs with low friction and low noise, and sealed versions need minimal maintenance. That is why it is the default bearing type for motors and home appliances.

Where deep groove ball bearings are used

• Electric motors. The inner ring runs warmer than the outer ring, so C3 clearance is common, and a wave spring often adds a light preload to keep the balls loaded and quiet. See electric motor bearings and the C0 vs C3 checklist.
• Pumps and fans. See water pump bearings.
• Farm machinery and conveyors, where sealed bearings keep out contaminants. See agricultural machinery bearings.
• Household appliances, power tools and small fans, often in the 6000 series.

The seal selector helps pick open, shielded or sealed for the environment.

Deep groove ball bearing size chart: reading d, D and B

Metric deep groove ball bearings follow the boundary dimensions of the ISO 15 general plan, which fixes preferred combinations of bore, outside diameter and width so that bearings from different makers interchange. The bore code is the last two digits of the designation. Codes 00, 01, 02 and 03 stand for 10, 12, 15 and 17 mm; from 04 upward you multiply the code by 5 to get the bore in mm.

Bore code	Bore d (mm)	6000 series (D x B)	6200 series (D x B)	6300 series (D x B)
00	10	26 x 8	30 x 9	35 x 11
01	12	28 x 8	32 x 10	37 x 12
02	15	32 x 9	35 x 11	42 x 13
03	17	35 x 10	40 x 12	47 x 14
04	20	42 x 12	47 x 14	52 x 15
05	25	47 x 12	52 x 15	62 x 17
06	30	55 x 13	62 x 16	72 x 19
07	35	62 x 14	72 x 17	80 x 21
08	40	68 x 15	80 x 18	90 x 23
09	45	75 x 16	85 x 19	100 x 25
10	50	80 x 16	90 x 20	110 x 27

Values are from the FULI specification sheet; the full model table at the top of the page continues to a 160 mm bore. To measure an unmarked bearing, take the bore size and outside diameter with a caliper, then read the width across the rings, and match the three numbers against the chart. The bearing cross reference page covers the suffix codes that follow the number.

Deep groove ball bearing 6205 and other fast-moving sizes

The deep groove ball bearing 6205 is 25 x 52 x 15 mm and is the size we quote most often, because a 25 mm shaft is common in single-phase motors, water pumps and small gearboxes. Its neighbours are the 6204 bearing at 20 x 47 x 14 mm and the 6206 bearing at 30 x 62 x 16 mm. Full details, variants and a designation breakdown are on the 6205 bearing dimensions page.

We have seen the same short list of sizes dominate inquiries from 50+ countries & regions: 6201 to 6210 in the 6200 series, 6301 to 6310 in the 6300 series, and 6000 to 6008 for fans and small appliances. Large inventory stocked for immediate dispatch covers these fast movers in open, shielded and sealed versions; less common sizes are confirmed against stock at quotation.

Deep groove ball bearing manufacturers: what to check before you order

Because boundary dimensions are standardized, a 6205 from one source drops into the same housing as a 6205 from another. What differs between deep groove ball bearing manufacturers is everything the dimensions do not show. We recommend asking for the following items in writing before a first order, whoever you buy from:

1. Steel grade and proof. FULI rings and balls are GCr15 chrome bearing steel; the steel maker’s GCr15 material certificate is available on request for OEM and industrial orders.
2. Precision and clearance codes. Precision P0 as standard (ABEC-1 in the ABMA system) and P6 on request (P5 by model); radial clearance C0 as standard and C3 on request. State the code on the order, not just “standard”.
3. Inspection scope. A FULI inspection report normally covers dimensions, radial clearance, rotation noise, vibration, appearance, material certificate and batch traceability.
4. Pre-shipment batch checks cover rotation smoothness, dimensions, grease fill, rust and appearance.
5. Export documents: commercial invoice, packing list and CCPIT certificate of origin, plus an FTA Form COO where the destination country qualifies.
6. Load ratings and speeds. The model pages list the dynamic load rating Cr and static rating C0r in kN, limiting speeds and weight from FULI’s catalog. They are not fixed by the ISO designation, so compare them between suppliers and confirm them for your application.
7. Assembly method. FULI deep groove ball bearings are assembled on automatic assembly machines. Ask any supplier whether its bearings are assembled by hand or by machine. By hand, the worker picks the ball size from experience, and the clearance is checked on the finished bearing afterwards. On an automatic machine, the inner and outer ring raceways are measured first, the machine picks the ball size to match, and each bearing comes out at the clearance set on the machine. Because every bearing goes through that matching, more of the batch lands inside the clearance range, and the pass rate is higher.

Backed by 20+ years of bearing export experience in Linqing, Shandong. That experience is why the points above are on our order form rather than in a brochure.

Specifications and dimensions FULI supplies

Item	FULI specification
Series	6000, 6200, 6300 single row; 6400 and 16000 selected sizes
Bore range	10 to 100 mm on this site; other sizes on request
Seal or shield	Open; ZZ (two metal shields); 2RS (two rubber seals)
Material	GCr15 chrome bearing steel, rings and rolling elements
Precision	P0 standard; P6 on request; P5 by model
Vibration grade	Z3V3 standard; other grades on request
Radial clearance	C0 standard; C3 on request
Dimensions	d, D and B to the ISO 15 general plan
Load ratings	Cr, C0r, limiting speeds and weight from FULI’s catalog on the model pages

To get a quotation, send the part number with suffix (for example 6205-2RS C3), the quantity per size, and the destination port to sales@fuli-bearings.com or use the request a quote form. Our team answers with unit price, packing detail and the inspection items that will be on the report. Mounted versions of these bearings, in pillow block and flange housings, are listed under bearing housing on this site.

Sources

1. SKF Rolling bearings catalogue (PUB BU/P1 17000/1 EN) (SKF)
2. ISO 15:2017 Rolling bearings - Radial bearings - Boundary dimensions, general plan (preview) (ISO via iTeh Standards)
3. Timken Engineering Manual (Order No. 10424) (Timken)
4. Deep Groove Ball Bearings (product page) (NSK)
5. Timken Ball Bearing Catalog - Radial and Angular Contact Ball Bearings (Order No. 10734) (Timken)