The Hammond RM4U18BRKT is the adjustable-depth rear bracket kit, a pair of rear rack ears for 4-post mounting of 4U RM Series rack-mount aluminum enclosures. It is for integrators and OEM builders who need to support the back of a deep chassis in a 4-post rack rather than hanging it from the front ears alone.
The series ordering table lists RM4U18BRKT as the adjustable-depth mounting bracket for the 4U, 16.60 in wide RM4U1918SBK/VBK (18 in deep), RM4U1922SBK/VBK (22 in deep) and RM4U1928SBK/VBK (28 in deep) enclosures. It adds a maximum of 16.00 in (406 mm) of depth to the chassis and is compatible with full 16.60" width versions only.
The drawing shows the kit as a rear support bracket and a rear extension bracket, 508.00 mm [20.000 in] long, with eighteen Ø4.78 mm [0.188 in] adjustment holes and 6-32 PEM nuts (4x). Supplied hardware: 8x #6 external tooth washers, 8x #6 flat washers, 8x #8 hex nuts, 8x #8 internal tooth washers, 8x 6-32 x 1/2" screws and 8x 8-32 x 1/2" screws. The 8x 10-32 clip nuts and 8x 10-32 x 1/2" screws for the rack rails are not supplied.
RM4U18BRKT is RoHS and REACH compliant, has a shipping weight of 2 lbs (0.91 kg), and carries UPC 623980070155 and UNSPSC 43201602. Brackets are sold in pairs.
| Series | RM Series Rack Mount Aluminum Instrument Enclosure |
| Sold As | Pair (adjustable-depth rear rack ears for 4-post mounting) |
| Description | rack hardware - rear bracket kit for RM series racks |
| Part Number | RM4U18BRKT |
| Short Description | REAR BRKT KIT FOR 4U 18" DEEP |
| Listed Size (L X W X H) | 5.25 in x 16.6 in x 18 in (133 mm x 422 mm x 457 mm) |
| Other Drawing Dimensions | 87.33 mm [3.438 in]; 76.28 mm [3.003 in]; 53.34 mm [2.100 in]; 50.80 mm [2.000 in]; 31.75 mm [1.250 in]; 30.48 mm [1.200 in]; 9.53 mm [0.375 in] |
| Bracket Heights (Drawing) | 177.04 mm [6.970 in]; 165.10 mm [6.500 in] |
| Adjustment Holes (Drawing) | Ø4.78 mm [0.188 in] (18x) |
| Rear Extension Bracket Length (Drawing) | 508.00 mm [20.000 in] |
| UPC | 623980070155 |
| UNSPSC | 43201602 |
| Compatibility | Full 16.60" width versions only |
| Mounting Type | 4-post |
| For Chassis Height | 4U |
| Listed For Enclosures | RM4U1918SBK, RM4U1918VBK, RM4U1922SBK, RM4U1922VBK, RM4U1928SBK, RM4U1928VBK |
| Max Depth Added To Chassis | 16.00 in (406 mm) |
| PEM Nuts | 6-32 PEM nut (4x) |
| (7) Screws | 8x 6-32 x 1/2" screw |
| (8) Screws | 8x 8-32 x 1/2" screw |
| (5) Hex Nuts | 8x #8 hex nut |
| (9) Clip Nuts | 8x 10-32 clip nut (not supplied) |
| (10) Rack Screws | 8x 10-32 x 1/2" screw (not supplied) |
| (4) Flat Washers | 8x #6 flat washer |
| (1) Rear Support Bracket | Included |
| (2) Rear Extension Bracket | Included |
| (3) External Tooth Washers | 8x #6 ext. tooth washer |
| (6) Internal Tooth Washers | 8x #8 int. tooth washer |
| Shipping Weight | 2 lbs (0.91 kg) |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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The ordering table lists it for RM4U1918SBK/VBK, RM4U1922SBK/VBK and RM4U1928SBK/VBK. It is compatible with full 16.60" width versions only.
Up to 16.00 in (406 mm) of depth added to the chassis.
Yes. The adjustable-depth rear rack ears are sold in pairs.
No. The drawing marks the 8x 10-32 clip nuts and 8x 10-32 x 1/2" screws as not supplied. The kit does include #6 and #8 washers, #8 hex nuts, and 6-32 and 8-32 x 1/2" screws.
It is a rear rack ear pair for 4-post mounting.
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