Maedler North America

Part number (SKU) 12912100
No. of Teeth 21
da [mm] 228,2
d [mm] 213,04
ND [mm] 140
B [mm] 25
L [mm] 80
Weight [kg] 15,50

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Weight 15.5 kg
Dimensions 228 × 228 × 80 cm
No. of teeth

da [mm]

d (mm)

ND [mm]

B [mm]

L [mm]

Weight [kg]

Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 21 teeth material steel PN: 12912100

Material: Steel C45, not hardened. Pre-bored.

General dimensions: B1 = 18,5 mm, B2 = 54,6 mm, c = 3,5 mm, r3 = 32 mm.
Other dimensions: See the table.

$313.32

Ships within 1-2 weeks

Quantity Discount (%) Price
1 - 4 $313.32
5 - 9 5.23 % $296.92
10 - 24 10.46 % $280.54
25+ 15.69 % $264.16
ProductPart number (SKU)MaterialSurfaceNumber of strandsHardenedHubDIN ISO No.No. of teethOuter diameter [da]Pitch circle diameter [d]Hub diameter [ND]Bore [B]Total length [L]WeightPrice
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 10 teeth material steel PN: 1291100012911000Steel (1045)Blank2NoOne sided20 B-210117 [mm]102.74 [mm]70 [mm]20 [mm]75 [mm]2.85 [kg] $70.01
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 11 teeth material steel PN: 1291110012911100Steel (1045)Blank2NoOne sided20 B-211127 [mm]112.68 [mm]80 [mm]20 [mm]80 [mm]3.72 [kg] $84.47
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 12 teeth material steel PN: 1291120012911200Steel (1045)Blank2NoOne sided20 B-212137 [mm]122.68 [mm]90 [mm]20 [mm]80 [mm]4.66 [kg] $98.40
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 13 teeth material steel PN: 1291130012911300Steel (1045)Blank2NoOne sided20 B-213147.5 [mm]132.65 [mm]100 [mm]20 [mm]80 [mm]5.70 [kg] $113.23
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 14 teeth material steel PN: 1291140012911400Steel (1045)Blank2NoOne sided20 B-214157.6 [mm]142.68 [mm]110 [mm]20 [mm]80 [mm]6.84 [kg] $128.25
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 15 teeth material steel PN: 1291150012911500Steel (1045)Blank2NoOne sided20 B-215167.7 [mm]152.72 [mm]120 [mm]20 [mm]80 [mm]8.08 [kg] $154.46
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 16 teeth material steel PN: 1291160012911600Steel (1045)Blank2NoOne sided20 B-216177.7 [mm]162.75 [mm]120 [mm]25 [mm]80 [mm]8.90 [kg] $158.00
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 17 teeth material steel PN: 1291170012911700Steel (1045)Blank2NoOne sided20 B-217187.7 [mm]172.78 [mm]120 [mm]25 [mm]80 [mm]9.92 [kg] $173.87
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 18 teeth material steel PN: 1291180012911800Steel (1045)Blank2NoOne sided20 B-218197.8 [mm]182.85 [mm]120 [mm]25 [mm]80 [mm]11.00 [kg] $190.45
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 19 teeth material steel PN: 1291190012911900Steel (1045)Blank2NoOne sided20 B-219207.9 [mm]192.91 [mm]120 [mm]25 [mm]80 [mm]12.16 [kg] $207.08
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 20 teeth material steel PN: 1291200012912000Steel (1045)Blank2NoOne sided20 B-220217.9 [mm]202.98 [mm]120 [mm]25 [mm]80 [mm]13.38 [kg] $223.44
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 21 teeth material steel PN: 1291210012912100 $313.32
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 25 teeth material steel PN: 1291250012912500Steel (1045)Blank2NoOne sided20 B-225268.4 [mm]253.33 [mm]140 [mm]25 [mm]80 [mm]21.36 [kg] $315.29
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 26 teeth material steel PN: 1291260012912600 $451.70
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 28 teeth material steel PN: 1291280012912800 $449.58
Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 30 teeth material steel PN: 1291300012913000Steel (1045)Blank2NoOne sided20 B-230318.7 [mm]303.75 [mm]150 [mm]25 [mm]80 [mm]30.69 [kg] $436.46

Double-strand sprocket ZRS with hub 20 B-2 1 1/4×3/4″ 21 teeth material steel PN: 12912100

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