FDCR

STANDARD
Double Nut with Flange (DIN 69051).

Standard nuts are with oil-seals.

Best combination for smooth and backlash-free operation with high rigidity.

A double nut must always be used pre-loaded and have to be assembled on the ball screw spindle by Rollco. Standard preload is P2, see “Preload and clearance” in Technical information.

Lead accuracy G5 or better is required for proper function. For best performance, a ground spindle is recommended.

All dimensions in mm.

Product Information

Material: Ball screw: S55C (according to standard JIS G4051) / Ball nut: SCM415H (according to standard JIS G4053)
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Designation Select all CAD Compare Get quote Lead Time * Compatible with Type Dynamic Load Ratings Ca (N) Static Load Ratings C0a (N) Ball diameter Turns x circuits
1 BKN12 / FKN12 / BFN12 / FFN12 A 10291 11223 3.175 1 x 3
1 BKN15 / FKN15 / BFN15 / FFN15 A 14833 19571 3.175 1 x 4
1 BKN20 / FKN20 / BFN20 / FFN20 A 16716 25320 3.175 1 x 4
1 BKN17 / FKN17 / BFN17 / FFN17 A 28263 36248 4.762 1 x 4
1 BKN25 / FKN25 / WBK25DF / BFN25 / FFN25 A 18874 33383 3.175 1 x 4
1 BKN25 / FKN25 / WBK25DF / BFN25 / FFN25 A 47422 76861 6.35 1 x 4
1 BKN30 / FKN30 / WBK30DF / WBK30DFF / BFN30 / FFN30 B 21013 42595 3.175 1 x 4
1 BKN30 / FKN30 / WBK30DF / WBK30DFF / BFN30 / FFN30 B 52964 98826 6.35 1 x 4
1 BKN40 / WBK40DF / WBK40DFF / BFN40 B 58203 120791 6.35 1 x 4

*Green: Normally in stock, contact us for current status. Blue: Contact us for delivery time.

Designation Select all CAD Compare Get quote A B D H L Q W X d0 x Lead
48 10 28 40 80 M6 38 5.5 16 x 5
58 12 36 44 92 M6 47 6.6 20 x 5
62 12 40 48 92 M6 51 6.6 25 x 5
62 12 40 48 153 M6 51 6.6 25 x 10
80 12 50 62 92 M6 65 9 32 x 5
80 16 50 62 160 M6 65 9 32 x 10
93 15 63 70 96 M8 78 9 40 x 5
93 18 63 70 162 M8 78 9 40 x 10
110 16 75 85 162 M8 93 11 50 x 10
  • STANDARD

    RSCR
    Ball nut cylindrical with thread, internal recirculation, for right lead (SR) screw
  • STANDARD

    FSCR/FSCL
    Ball nut with flange, for right & left lead screw (SR/SL), most common type
  • STANDARD

    FSER
    Ball nut with flange, long lead, for right lead (SR) screw
  • STANDARD

    SFYAR
    Ball nut with flange, overlead, for right lead (SCR) screw