Manufacturer: Fukudaco
Model: CF Seal

Overview

Compact, High-Performance Labyrinth Seal with Only 6mm Thickness

Introducing our high-performance CF Seal for spindles, a compact labyrinth seal with a thickness of just 6mm. Despite its slim design, it features a dual labyrinth structure (axial and radial) that enhances sealing performance. This high-value seal improves sealing efficiency and offers energy-saving and maintenance-free benefits due to its non-contact nature.

Maintaining excellent sealing helps reduce air consumption for air purge systems and shortens the overall spindle length. Perfect for applications requiring high-performance and space-efficient sealing solutions.

Applications

Prevention of coolant intrusion in high-speed rotating spindles

CF Seal S10 Series (for precision angular contact ball bearings)

• Machine tool spindles
• High-speed rotating equipment

CF Seal AO Series (for deep groove ball bearings)

• General industrial machinery

Features

• High sealing performance with composite labyrinth design
• Reduced air consumption for air purge systems
• Compact product with a seal thickness of only 6mm
• Shortens overall spindle length
• Fixes angular bearings through the CF seal

CF Seal S10 Series

CF Seal S10, designed for 79 and 70-series precision angular bearings, can be selected based on the bearing type.

• Material: Chrome steel
• Hardness HRC=45
• Parallelism: 5μm
• Operating temperature: -40°C to 170°C
• No peripheral speed limit
• Seal size
  ◯CF60 series
  Inner diameter φ20mm to φ100mm Seal width W:6mm
  ◯CF619 series
  Inner diameter φ40mm to φ80mm Seal width W:6mm
• Axial clearance
  Sax = 1mm
• Radial clearance
  Srad = 0.5mm
• Installation method: Inner and outer rings, clearance fit

CF Seal S10 Series Specifications

CF60 Series

	Inner diameter Φd [mm]	Outer diameter ΦD [mm]	Width W [mm]	Φe1 [mm]	Φe2 [mm]	Weight [kg]	Bearing Type
CF 6004 S10	20	42	6	28	38	0.051	7004
CF6005S10	25	47		33	43	0.059	7005
CF6006S10	30	55		39	49	0.079	7006
CF 6007 S10	35	62		45	55	0.097	7007
CF6008S10	40	68		50	60	0.113	7008
CF6009S10	45	75		55	65	0.134	7009
CF6010S10	50	80		60	70	0.145	7010
CF6011S10	55	90		67	77	0.189	7011
CF6012S10	60	95		72	82	0.202	7012
CF6013S10	65	100		77	87	0.215	7013
CF6014S10	70	110		83	93	0.268	7014
CF6015S10	75	115		89	99	0.283	7015
CF6016S10	80	125		94	104	0.343	7016
CF6017S10	85	130		100	110	0.360	7017
CF6018S10	90	140		107	117	0.428	7018
CF6019S10	95	145		112	122	0.447	7019
CF6020S10	100	150		117	127	0.465	7020

CF619 Series

	Inner diameter Φd [mm]	Outer diameter ΦD [mm]	Width W [mm]	Φe1 [mm]	Φe2 [mm]	Weight [kg]	Bearing Type
CF 61908 S10	40	62	6	48	58	0.084	7908
CF 61909 S10	45	68		53	63	0.097	7909
CF 61910 S10	50	72		58	68	0.100	7910
CF 61911 S10	55	80		63	73	0.126	7911
CF 61912 S10	60	85		68	78	0.135	7912
CF 61913 S10	65	90		73	83	0.144	7913
CF 61914 S10	70	100		80	90	0.190	7914
CF 61915 S10	75	105		85	95	0.201	7915
CF 61916 S10	80	110		90	100	0.212	7916

Product Tolerance

Inner ring inner diameter tolerance / outer ring outer diameter tolerance

Inner ring tolerance d [mm]
Diameter [µm]	Beyond ​	18 30	30 50	50 80	80 120
Tolerance [µm]		20 0	22 0	24 0	26 0

Outer ring tolerance D [mm]
Diameter [µm]	Beyond ​	30 50	50 80	80 120	120 150
Tolerance [µm]		0 -22	0 -24	0 -26	0 -28

Seal width W tolerance

Width W: 6mm (0/-20µm)

CF Seal AO Series

Aluminum labyrinth seals are designed for 6200 series deep groove ball bearings, available in a range of bearing types.

• Material: Aluminum
• Operating temperature: -40°C to 200°C
• Axial clearance
  Sax = 1mm
• Radial clearance
  Srad = 0.5mm
• Recommended shaft finish tolerance k5
• Housing clearance recommended finishing tolerance J6
• Installation method: Inner and outer rings tight fit

Press in the inner and outer rings at the same time.

CF Seal AO Series Specifications

CF62 Series

	Inner diameter Φd [mm]	Outer diameter ΦD [mm]	Width W [mm]	Φe1 [mm]	Φe2 [mm]	Permissible speed n max. [min -1 ]	Weight [kg]	Bearing Type
CF6200A0	Ten	30	6	17	27	66,420	0.010	6200
CF6201A0	12	32		19	29	54,330	0.011	6201
CF6202A0	15	35		22	32	46,100	0.013	6202
CF 6203 A0	17	40		25	35	50,200	0.017	6203
CF 6204 A0	20	47		29	39	45,580	0.023	6204
CF6205A0	25	52		34	44	36,570	0.026	6205
CF 6206 A0	30	62		42	52	32,270	0.037	6206
CF 6207 A0	35	72		48	58	28,090	0.050	6207
CF6208A0	40	80		54	64	24,810	0.061	6208
CF 6209 A0	45	85		58	68	21,980	0.066	6209
CF6210A0	50	90		63	73	19,810	0.071	6210