Ballscrew Support and Linear Bearings. Click an image for further details

AF 10 to AF 20 (Floating support unit)	AK 10 to AK 20 (Fixed support unit without seals)
BF 6 to BF 40 (Floating support unit)	BK 6 to BK 40 (Fixed support unit without seals)
EF 10 to EF 20 (Floating support unit)	EK 10 to EK 20 (Fixed support unit without seals)
FF 8 to FF 20 / FF 25T to FF 30T (Flanged floating support unit)	FK 8 to FK 20 / FK 25T to FK 30T (Flanged fixed support unit with seals)
FF 25 to FF 40 (Flanged floating support unit)	FK 25 to FK 40 (Flanged fixed support unit with seals)