Ramset RAM 300 DC Swing Gate Operator Parts

Ramset RAM 300 DC Swing Gate Operator Replacement Parts

Genuine Ramset replacement parts for the RAM 300 DC (DC RAM 300s) swing gate operator — the 24 VDC brushless, battery-backup version of the RAM 300 gate opener. Use the diagram and the tables below to identify your part, then click any part number to order. The RAM 300 DC shares its chassis and mechanical layout with the RAM 300 AC, so most wear parts are the same; the motor, control boards, transformer and battery hardware are DC-specific.

Ramset RAM 300 DC swing gate operator replacement parts diagram with callout numbers
About this diagram: Ramset has not yet published a DC exploded view, so the drawing above is the factory RAM 300 parts diagram. The RAM 300 DC uses the same layout, and the Ref numbers in the tables match the callouts on this drawing. DC-only electrical parts (battery, DC driver board, bridge rectifier) are not shown and are marked —. Callouts on the drawing that are not listed below are AC-only parts — find those on the RAM 300 (AC) parts page.

Ramset RAM 300 DC Operator Parts

Ref Part Number Description Qty
2 800-00-83 Chassis — RAM 300 AC/DC 1
6 800-02-04 Gear Reducer — Size 50, Ratio 80:1 1
8 800-04-04 Motor, Brushless DC — 1.4 Nm, 24 VDC (in place of the AC motor shown) 1
12 800-08-00 Pulley, Cast Iron — 5/8" x 10" (AK104) 1
17 800-08-45 Pulley, Cast Iron — 5/8" x 2" (AK20) 1
20 800-10-42 Belt — 4L-390 [BBS] 1
21 800-12-08 Shaft — 1" x 11 7/8" 1
23 800-14-15 Cover, Polyethylene Cap Arm 1
25 800-20-05 Limit Switch 2
26 800-20-21 Switch, Foot Pedal 1
27 800-22-03 Spring — 1/4" x 1" 1
28 800-24-10 Foot Pedal Release 1
29 800-28-20 Square Pivot — 1 1/2" : 1" 1
32 800-28-40 Pivot Arm Release 1
33 800-44-01 Bearing, Flange — F205 2
37 800-48-05 Cam, Limit Switch 2
39 800-52-11 Chain, Drive Assembly — #40 x 28 links 1
41 800-54-27 Bracket, Limit Switch [R300 AC/DC] 1
45 800-55-05 Bracket, Foot Pedal Guide 1
46 800-55-10 Bracket, Foot Pedal Switch Lockdown 1
48 800-60-07 Transformer, Dual 115V/230V Input — 4 input leads [DC models] 1
49 800-60-10 Switch, Rocker 2
50 800-65-01 Control Board, ETL Logic (AC or DC — specify DC) 1
54 800-66-11 Control Board Cover, Lexan Plastic [R300 AC/DC] 1
58 800-70-22 Horn Alarm Buzzer — 120 dB 1
60 800-70-35 Knob — 5/16"-18 x 1 1/2" 1
61 800-70-36 Knob — 5/16"-18 x 1/2" 1
64 800-70-98 Warning Sign for Gates 2
66 800-75-41 Torque Limited Assembly (breakdown below) 1
67 800-75-22 Clutch Release Assembly (breakdown below) 1
70 800-75-11 Cover Assembly — R300 1
73 800-75-05 Access Door, Stainless Steel — R300 1
74 800-75-00 Arm Assembly (breakdown below) 1
— 800-60-35 Bridge Rectifier — Single Phase, 100V 35A Module 1
— 800-65-05 Control Board, ETL DC Driver 1
— 800-70-00 Battery, 12VDC — 7.5Ah (battery backup) 2

Assembly Breakdowns

These assemblies are sold complete under the part numbers above. The components inside each one are listed here so you can replace just the worn piece.

Torque Limited Assembly — 800-75-41

Part Number Description Qty
800-06-04 Sprocket — 40A40 1
800-26-01 Friction Disc, Torque Limited — 3 1/2" 2
800-26-10 Tension Washer, Torque Limited — 3" 1
800-34-22 Set Screw — 1/4"-20 x 3/8" 2
800-36-20 Bolt, Hex Head — 3/8"-16 x 1" 3
800-46-30 Bushing, Steel Sprocket — ID 1.693" : OD 1.992" 1
800-58-02 Arbor Nut, Torque Limited 1
800-58-11 Arbor Washer, Torque Limited — 3 1/2" 2
800-58-31 Arbor, Torque Limited — 1" 1

Clutch Release Assembly — 800-75-22

Part Number Description Qty
800-06-11 Sprocket, Clutch Release — 41B21H 1
800-22-06 Spring — 1 1/4" x 3/4" (3 turns) 1
800-24-02 4-Pin Disc — R300 1
800-40-55 Washer, Flat — ID 1 1/16" : OD 2" x 1/8" 1
800-40-56 Washer, Flat — ID 1 1/16" : OD 2" x .090" 1
800-42-30 Key Way — 1/4" Sq. x 1 1/2" 1
800-58-22 Arbor, Foot Pedal Release — R300 1
800-70-88 Snap Ring, External — 1 3/8" 1

Arm Assembly — 800-75-00

Part Number Description Qty
800-28-00 Arm, Metal Tubing — 1" x 2" x 32" 1
800-28-01 Arm, Metal Tubing — 1" x 2" x 42" 1
800-28-30 Plastic End Cap — 1" x 2" 2
800-36-34 Bolt, Hex Head — 1/2"-13 x 2" 1
800-36-53 Bolt, Hex Head — 5/8"-11 x 4" 1
800-38-76 Nut, Hex Head Nylock — 1/2" 1
800-38-78 Nut, Hex Head Nylock — 5/8" 1
800-40-27 Washer, Flat — ID 1/2" : OD 1" (F436) 4
800-40-40 Washer, Flat — ID 5/8" : OD 1 5/16" 3
800-54-10 Bracket, External Channel 1
800-54-37 Bracket, Internal Gate 1

Common Ramset RAM 300 DC Faults and the Parts That Fix Them

Operator chirping or running on battery only

The DC Alert chirp means the operator has lost AC supply and is running down its batteries. Check the incoming circuit and the rocker switches (800-60-10) first, then the transformer (800-60-07) and the bridge rectifier (800-60-35) that feed the charging circuit.

Dead after a power outage

If the gate opener will not run once AC power is restored, the batteries (800-70-00) have usually been discharged past recovery — replace them as a pair. If fresh batteries will not hold a charge, test the charging supply (transformer and rectifier above).

Boards power up but the motor will not run

Check the clutch release (800-75-22) has not been left disengaged after manual operation — the cheapest fix on this list. Otherwise test the DC driver board (800-65-05) before the brushless motor (800-04-04); the driver fails more often than the motor.

Gate overruns its open or close point

Worn limit components let the operator lose track of gate position. Inspect the limit switches (800-20-05) and limit switch cams (800-48-05), then the limit switch bracket (800-54-27). A slipping torque limiter (800-75-41) can also stop the gate short of its stops — adjust its tension before replacing parts.

No response to remotes or keypads

If a known-good remote gets no response, check the receiver wiring first, then the logic board (800-65-01).

Other Ramset Gate Operator Parts

Also see: RAM 302 DC parts · RAM 3000 DC parts · RAM 300 (AC) parts · all Ramset gate operator parts.

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