THK EK Support Unit, Fixed Side, Square (Bore 4-20)

Compact square-housing fixed-side support unit for small and miniature ball screws, supplied with a matched DF angular contact bearing pair and lock nut.

Key features

Fixed-side unit with DF-arranged 30 deg contact angle angular ball bearings (P5 class)
EK4/5/6 use miniature bearings developed specifically for miniature ball screws
Square housing for direct bolting to the base; EK4-8 bolt from side, EK10-20 four-bolt square flange
Supplied with collar, seal, lock nut and hex socket set screw with set piece
Pairs with EF support-side unit; use recommended shaft end H (H1/H2/H3)
Housing, bearing and lock nut pre-assembled for fast mounting

Specifications

Brand	THK
Series	EK
Side	Fixed side
Housing	Square (block)
Bore range	4 - 20 mm
Bearing	Angular contact, DF set, P5
Matching support side	EF
Recommended shaft end	H1 / H2 / H3
Dimensions	L x B x H
Source	THK General Catalog Ball Screw (Korean ed. 515-2K), p. A15-350-351

EK4		Shaft dia d: 4 mm \| L x B x H: 15 x 34 x 19 mm \| Bearing: 704 equiv. (DF, P5) \| Axial Ca / perm. load: 0.93 / 1.1 kN \| Axial rigidity: 27 N/um \| Mass: 0.06 kg
EK5		Shaft dia d: 5 mm \| L x B x H: 16.5 x 36 x 21 mm \| Bearing: 705 equiv. (DF, P5) \| Axial Ca / perm. load: 1 / 1.24 kN \| Axial rigidity: 29 N/um \| Mass: 0.08 kg
EK6		Shaft dia d: 6 mm \| L x B x H: 20 x 42 x 25 mm \| Bearing: 706 equiv. (DF, P5) \| Axial Ca / perm. load: 1.38 / 1.76 kN \| Axial rigidity: 35 N/um \| Mass: 0.14 kg
EK8		Shaft dia d: 8 mm \| L x B x H: 23 x 52 x 32 mm \| Bearing: 798 equiv. (DF, P5) \| Axial Ca / perm. load: 2.93 / 2.15 kN \| Axial rigidity: 49 N/um \| Mass: 0.24 kg
EK10		Shaft dia d: 10 mm \| L x B x H: 24 x 70 x 43 mm \| Bearing: 7000 equiv. (DF, P5) \| Axial Ca / perm. load: 6.08 / 3.1 kN \| Axial rigidity: 65 N/um \| Mass: 0.46 kg
EK12		Shaft dia d: 12 mm \| L x B x H: 24 x 70 x 43 mm \| Bearing: 7001 equiv. (DF, P5) \| Axial Ca / perm. load: 6.66 / 3.25 kN \| Axial rigidity: 88 N/um \| Mass: 0.44 kg
EK15		Shaft dia d: 15 mm \| L x B x H: 25 x 80 x 49 mm \| Bearing: 7002 equiv. (DF, P5) \| Axial Ca / perm. load: 7.6 / 4 kN \| Axial rigidity: 100 N/um \| Mass: 0.55 kg
EK20		Shaft dia d: 20 mm \| L x B x H: 42 x 95 x 58 mm \| Bearing: 7204 equiv. (DF, P5) \| Axial Ca / perm. load: 17.9 / 9.5 kN \| Axial rigidity: 170 N/um \| Mass: 1.35 kg

Ball Screw Support UnitsTHK

8 product codes available in this family

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THK EK Support Unit, Fixed Side, Square (Bore 4-20)

Brand THK·Ball Screw Support Units

Available part numbers (8)

EK4, EK5, EK6, EK8, EK10, EK12, EK15, EK20

How to order

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Product codes & specifications

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RFQ List (0)

	Product code	Spec
	EK4	Shaft dia d: 4 mm \| L x B x H: 15 x 34 x 19 mm \| Bearing: 704 equiv. (DF, P5) \| Axial Ca / perm. load: 0.93 / 1.1 kN \| Axial rigidity: 27 N/um \| Mass: 0.06 kg
	EK5	Shaft dia d: 5 mm \| L x B x H: 16.5 x 36 x 21 mm \| Bearing: 705 equiv. (DF, P5) \| Axial Ca / perm. load: 1 / 1.24 kN \| Axial rigidity: 29 N/um \| Mass: 0.08 kg
	EK6	Shaft dia d: 6 mm \| L x B x H: 20 x 42 x 25 mm \| Bearing: 706 equiv. (DF, P5) \| Axial Ca / perm. load: 1.38 / 1.76 kN \| Axial rigidity: 35 N/um \| Mass: 0.14 kg
	EK8	Shaft dia d: 8 mm \| L x B x H: 23 x 52 x 32 mm \| Bearing: 798 equiv. (DF, P5) \| Axial Ca / perm. load: 2.93 / 2.15 kN \| Axial rigidity: 49 N/um \| Mass: 0.24 kg
	EK10	Shaft dia d: 10 mm \| L x B x H: 24 x 70 x 43 mm \| Bearing: 7000 equiv. (DF, P5) \| Axial Ca / perm. load: 6.08 / 3.1 kN \| Axial rigidity: 65 N/um \| Mass: 0.46 kg
	EK12	Shaft dia d: 12 mm \| L x B x H: 24 x 70 x 43 mm \| Bearing: 7001 equiv. (DF, P5) \| Axial Ca / perm. load: 6.66 / 3.25 kN \| Axial rigidity: 88 N/um \| Mass: 0.44 kg
	EK15	Shaft dia d: 15 mm \| L x B x H: 25 x 80 x 49 mm \| Bearing: 7002 equiv. (DF, P5) \| Axial Ca / perm. load: 7.6 / 4 kN \| Axial rigidity: 100 N/um \| Mass: 0.55 kg
	EK20	Shaft dia d: 20 mm \| L x B x H: 42 x 95 x 58 mm \| Bearing: 7204 equiv. (DF, P5) \| Axial Ca / perm. load: 17.9 / 9.5 kN \| Axial rigidity: 170 N/um \| Mass: 1.35 kg

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THK EK Support Unit, Fixed Side, Square (Bore 4-20)