diff --git a/Production/3DPrint/bearing_seat_6804_hinge.stl b/Production/3DPrint/bearing_seat_6804_hinge.stl
new file mode 100644
index 0000000..4a57483
Binary files /dev/null and b/Production/3DPrint/bearing_seat_6804_hinge.stl differ
diff --git a/cad/bearing_seat_hinge.scad b/cad/bearing_seat_hinge.scad
new file mode 100644
index 0000000..1a7ef0c
--- /dev/null
+++ b/cad/bearing_seat_hinge.scad
@@ -0,0 +1,34 @@
+seat6804();
+
+module seat6804() {
+  difference($fn=256) {
+    union() {
+      cylinder(d=50,h=4); // brim
+      cylinder(d=36,h=8);
+    }
+    translate([0,0,-1]) cylinder(d=32.1,h=7.3); // bearing
+    translate([0,0,6.29]) cylinder(d1=32.1,d2=30,h=1.2); // limiter
+    translate([0,0,-1.2]) cylinder(d=30,h=20); // limiter
+    screws();
+  }
+  *%nsk6804();
+}
+
+
+module screws() {
+  screw([-14.5,-14.5]);
+  screw([14.5,14.5]);
+  screw([-14.5,14.5]);
+  screw([14.5,-14.5]);
+}
+
+module screw(pos) {
+  translate(pos) {
+    translate([0,0,-1]) cylinder(d=3.4,h=11);
+    translate([0,0,2.5]) cylinder(d=6,h=11,$fn=32);
+  }
+}
+
+module nsk6804() {
+  rotate([0,90,0]) resize([7,32,32]) import("nsk6804.stl");
+}