Part numbers (TNR) R1631 893 21   
 
Size 20   
 
Accuracy class H   
 
Preloading without   
 
Ball Chain No   
 
Seal low-friction   
 
Lubrication pre-lubricated   
 
A [mm] 63   
 
A1 [mm] 31.5   
 
A2 [mm] 20   
 
A3 [mm] 21.5   
 
B [mm] 75   
 
B1 [mm] 49.6   
 
H [mm] 30   
 
H1 [mm] 25.35   
 
K1 [mm] 11.8   
 
K2 [mm] 11.8   
 
K3 [mm] 3.35   
 
K4 [mm] 3.35   
 
H2 with rail seal cover strip [mm] 20.75   
 
H2 without rail seal cover strip [mm] 20.55   
 
E1 [mm] 53   
 
E2 [mm] 40   
 
E3 [mm] 35   
 
E8 [mm] 32.5   
 
E9 [mm] 7.3   
 
N1 [mm] 7.7   
 
N2 [mm] 5.2   
 
N4 [mm] 13.5   
 
N6±0,5 [mm] 13.2   
 
S1 [mm] 5.3   
 
S2 [mm] M6   
 
S5 [mm] 6   
 
S9 [mm] M3x5   
 
S11 [mm] 4.7   
 
T [mm] 60   
 
V1 [mm] 6   
 
weight [kg] 0.24   
 
C [N] 18800   
 
 
F max [N] 7200   
 
Mt [Nm] 240   
 
 
Mt max [Nm] 92   
 
ML [Nm] 130   
 
 
ML max [Nm] 50   
 
Note Determination of the dynamic load capacities and moments is based on a travel life of 100,000 m per ISO 14728-1. Often only 50,000 m are actually stipulated. For comparison: Multiply values C, Mt and ML from the table by 1.26.   
 
Dynamic characteristics Travel speed: vmax = 5 m/s
Acceleration: amax = 500 m/s2
(If Fcomb > 2.8 · Fpr : amax = 50 m/s2)   
 
Product group info Note
Can be used on all Ball Guide Rails SNS.