6800 Series Thin Section Deep Groove Ball Bearings

Series overview

6800 Series Deep Groove Ball Bearings

6800 series deep groove ball bearing product photo

A Slimmer Profile for Space-Constrained Designs

The 6800 series runs from a 6mm bore up to 50mm across 16 standard models (686–6810), including the widened 6800W7 variant for applications that need extra rigidity without stepping up to the next bore. Compared with our standard-width lines at the same bore, the thinner ring section trims both weight and installed depth, which is why this series shows up in cameras, small servo motors, medical devices and instrument gearing where every millimeter of housing depth matters. It carries lighter loads than a full-width bearing of the same bore, so it's best matched to applications where compactness outweighs raw load capacity.

686–6810 Bore 6–50mm Open ZZ 2RZ 2RS

Bearing No.	Bore d mm	OD D mm	Width B mm	Chamfer r min mm	Dynamic Cr kN	Static Cor kN	Ball No.	Ball Size mm	Grease r/min	Oil r/min	Weight kg/pc
686	6	13	3.5	0.15	1.080	0.440	8	2.000	33000	42000	0.0027
687	7	14	3.5	0.15	1.170	0.510	9	2.000	31000	40000	0.0030
688	8	16	4	0.20	1.260	0.585	9	2.381	29000	38000	0.0040
689	9	17	4	0.20	1.720	0.820	11	2.000	28000	36000	0.0040
6800	10	19	5	0.30	1.830	0.925	9	2.381	26000	34000	0.0050
6800W7	10	19	7	0.30	1.830	0.925	9	2.381	26000	34000	0.0060
6801	12	21	5	0.30	1.920	1.040	12	2.381	22000	30000	0.0060
6802	15	24	5	0.30	2.080	1.260	14	2.381	20000	28000	0.0070
6803	17	26	5	0.30	2.810	1.720	15	2.381	19000	26000	0.0080
6804	20	32	7	0.30	4.000	2.470	14	3.175	17000	22000	0.0150
6805	25	37	7	0.30	4.300	2.950	16	3.175	15000	19000	0.0200
6806	30	42	7	0.30	4.700	3.650	19	3.175	13000	17000	0.0250
6807	35	47	7	0.30	4.900	4.050	22	3.175	11000	15000	0.0290
6808	40	52	7	0.30	5.100	4.400	25	3.175	9000	13000	0.0330
6809	45	58	7	0.30	6.400	5.650	27	3.175	7000	11000	0.0400
6810	50	65	7	0.30	6.600	6.100	28	3.175	5000	9000	0.0520

Note: Dynamic (Cr) and static (Cor) load ratings are in kN. Grease and oil lubrication speed limits are in r/min. All 16 bore sizes are available open, or sealed with ZZ, 2RZ or 2RS; 6800W7 is a widened variant of the 6800 for extra stiffness at the same bore.

Why choose 6800 series

Characteristics, Applications & Lead Time

Bearing Characteristics

The 6800 series pairs a small ball complement with a thin ring section, which keeps outer diameter and width down at every bore size compared with our standard-width lines. That slim build supports high speeds relative to its size — grease-lubricated limits reach 33,000 r/min at the smallest bore (686) and still hold at 5,000 r/min at the largest (6810). Load ratings are correspondingly modest, from 1.08 kN up to 6.6 kN dynamic across the range. Every bearing is still fully inspected before shipment.

Typical Applications

This series fits where housing depth or overall weight is the limiting factor: small precision motors, camera and optical mechanisms, medical and lab instruments, RC and hobby drivetrains, and compact gear trains where a standard-width bearing simply won't fit.

Lead Time & Minimum Order

All 16 bore sizes in the 6800 series run on a rolling production schedule, with sample lead time typically around 10 days and no strict minimum order quantity for trial batches. Let us know the bore size, seal option and quantity you need and we'll confirm a firm delivery date.

Common questions

Frequently Asked Questions — 6800 Series

What sizes are covered in the 6800 series?

The 6800 series runs across 16 standard models, 686 to 6810, with bores from 6mm to 50mm, outer diameters from 13mm to 65mm, and widths from 3.5mm to 7mm. Full dimensions for each model are in the table above.

What does the 'W7' in 6800W7 mean?

6800W7 is a widened version of the standard 6800 — same 10mm bore and 19mm outer diameter, but a 7mm width instead of 5mm. It's a drop-in option when a design needs a bit more stiffness or bearing surface without changing the bore.

How does the 6800 series compare to a standard-width bearing at the same bore?

At an equivalent bore, the 6800 series has a noticeably narrower ring section and lighter weight, which reduces both dynamic and static load ratings. In exchange, it fits shallower housings and generally supports a higher maximum speed for its size.

What load capacity should I expect from this series?

Dynamic load ratings start at 1.08 kN for the 686 and rise to 6.6 kN for the 6810, with static ratings from 0.44 kN to 6.1 kN. Match your working load against the Dynamic Cr and Static Cor columns for your specific bore.

Which seal types are offered?

Every model is available open, or sealed with ZZ metal shields, 2RZ non-contact rubber seals, or 2RS contact rubber seals. Open and ZZ/2RZ variants favor higher speeds, while 2RS trades a little top speed for better dust and moisture protection.

What's the top speed for 6800 series bearings?

Speed capacity scales down with bore size: the smallest models (686–689) run up to 28,000–33,000 r/min under grease lubrication, while the largest (6809–6810) top out around 5,000–7,000 r/min. Oil lubrication raises the ceiling further at every bore.

Are these bearings suited to axial loads as well as radial?

Yes, within their rated capacity. Like other deep groove ball bearings, the 6800 series takes radial load as its primary function but also handles light-to-moderate axial load in either direction, which suits the small motors and instrument spindles it's typically used in.

Do 6800 series bearings match other manufacturers' part numbers?

Yes. The 6800-series numbering follows the same ISO dimensional standard used across the industry, so bore, OD and width line up with the equivalent SKF, NSK, NTN, FAG or Koyo part. Share your current part number and we'll confirm the cross-reference.

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