847KR modified-shoulder diamonds: shoulder margins that stay where you put them. KR — Korner's rounded: the internal line angles are rounded, not the tip. The 1.4 mm end refines the shoulder while rounded internal corners cut clean without dragging — margins that stay where you put them. Natural diamond, multi-layer bonded, uniform particle distribution. FG 1.6 mm friction-grip shank.
SPEC: Shape: Modified Shoulder (847KR) · Head: 1.8 mm · Tip: 1.4 mm · Head length: 8 mm · Shank: FG (1.6 mm friction-grip) · Pack: 5 burs.
AVAILABLE GRITS: SC · C · M · F · EF — select at add-to-cart.
B2G2 — BUY TWO, GET TWO MORE FREE. Order two packs of D847KR/018 and two more are on us. Online orders only — the discount applies at checkout.
OPERATING SPEC — FG & FGSS SHANK. Recommended operating speed is set by head diameter. Apply the diamond to the surface only after reaching operating speed.
| HEAD DIAMETER (mm) | RECOMMENDED SPEED (rpm) |
|---|---|
| 0.6–1.0 | 75,000–150,000 rpm |
| 1.2–1.4 | 60,000–110,000 rpm |
| 1.5–1.8 | 45,000–88,000 rpm ◄ this head size |
| 2.0–2.3 | 40,000–75,000 rpm |
| 2.4–2.7 | 30,000–65,000 rpm |
| 2.9–3.1 | 25,000–56,000 rpm |
| 3.2–4.0 | 22,000–45,000 rpm |
| 4.2–5.2 | 20,000–37,000 rpm |
Recommended contact pressure: 0.3–2 N — let the diamond do the work. Water spray is essential: minimum 50 ml/min; heads over 2 mm with working lengths over 21 mm require additional cooling.
GRIT CODE — ONE CODE, ONE COLOR, ACROSS THE FULL DENTPS DIAMOND LINE. The color squares on the product image and in this legend share the same coding.
SAME FAMILY — 847KR/018 ACROSS LINES. Same head, same grit system, different shank or line:
SD847KR/018 — short shank diamond — posterior access
GD847KR/018 — Gold series FG diamond
DV847KR/018 — TWOoth Series — 30/pk
DDS847KR/018 — bulk 100/pk
Item D847KR/018 · Online-order B2G2 applied via the shopping cart.
