?Materials
| Type | [ M ]Material | [ S ]Surface Treatment | [ A ]Accessory Retaining Ring |
|||
| Round | Square | Compact | Bearings | Housing | Housing | |
| BGRRB | BGSRB | BGCRB | Steel | 1045 Carbon Steel | Black Oxide | Spring Steel |
| BGRR | BGSR | BGCR | Electroless Nickel Plating | *304 Stainless Steel | ||
| BARR | BASR | BACR | 2017 Aluminum Alloy | Clear Anodize | 304 Stainless Steel | |
| SBARR | SBASR | SBACR | Stainless Steel | |||
| SBGRR | SBGSR | SBGCR | 304 Stainless Steel | – | ||
[ ! ]* Bearings with Rubber Seals (V V and DD) are all made of steel.
[ ! ]* When D=68 ~ 90, the retaining ring is Spring Steel + Electroless Nickel Plating.
